diff --git a/Cargo.toml b/Cargo.toml
index 3d534fa..ea0f2f2 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ prost = { version = "0" }
 nats = { version = "0" }
 base64 = { version = "0" }
 
-beteran-protobuf-rust = { git = "https://gitlab.loafle.net/bet/beteran-protobuf-rust.git", tag = "v0.1.64-snapshot" }
-beteran-common-rust = { git = "https://gitlab.loafle.net/bet/beteran-common-rust.git", tag = "v0.1.48-snapshot" }
+beteran-protobuf-rust = { git = "https://gitlab.loafle.net/bet/beteran-protobuf-rust.git", tag = "v0.1.66-snapshot" }
+beteran-common-rust = { git = "https://gitlab.loafle.net/bet/beteran-common-rust.git", tag = "v0.1.50-snapshot" }
 
 [build-dependencies]
diff --git a/src/main.rs b/src/main.rs
index 70a3274..f4e36eb 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -8,6 +8,7 @@ mod member_bank_deposit;
 mod member_bank_withdraw;
 mod member_class;
 mod member_level;
+mod member_referrer;
 mod site;
 
 mod api;
@@ -41,6 +42,8 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     member_class::service::Service::new(connection_broker.clone(), queue_broker.clone());
   let member_level_service =
     member_level::service::Service::new(connection_broker.clone(), queue_broker.clone());
+  let member_referrer_service =
+    member_referrer::service::Service::new(connection_broker.clone(), queue_broker.clone());
   let site_service = site::service::Service::new(connection_broker.clone(), queue_broker.clone());
 
   let api_service = api::service::Service::new(connection_broker.clone(), queue_broker.clone());
@@ -56,6 +59,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     member_bank_withdraw_service.subscribe(),
     member_class_service.subscribe(),
     member_level_service.subscribe(),
+    member_referrer_service.subscribe(),
     site_service.subscribe(),
     api_service.subscribe(),
   )?;
diff --git a/src/member/service.rs b/src/member/service.rs
index f1fd1f7..7aa127d 100644
--- a/src/member/service.rs
+++ b/src/member/service.rs
@@ -220,7 +220,7 @@ impl Service {
                 site_id: s.site_id,
                 member_class_id: s.member_class_id,
                 member_level_id: s.member_level_id,
-                referrer_member_id: s.referrer_member_id,
+                parent_member_id: s.parent_member_id,
                 username_like: s.username_like,
                 nickname_like: s.nickname_like,
                 mobile_phone_number_like: s.mobile_phone_number_like,
@@ -679,7 +679,7 @@ impl Service {
           }));
         }
 
-        if let Some(r) = ss_delete_member_res.result {
+        if let Some(_r) = ss_delete_member_res.result {
           message
             .respond(
               bpr::c2se::member::DeleteMemberResponse {
diff --git a/src/member_referrer/mod.rs b/src/member_referrer/mod.rs
new file mode 100644
index 0000000..1f278a4
--- /dev/null
+++ b/src/member_referrer/mod.rs
@@ -0,0 +1 @@
+pub mod service;
diff --git a/src/member_referrer/service.rs b/src/member_referrer/service.rs
new file mode 100644
index 0000000..1ae467f
--- /dev/null
+++ b/src/member_referrer/service.rs
@@ -0,0 +1,613 @@
+use beteran_common_rust as bcr;
+use beteran_protobuf_rust as bpr;
+use prost::Message;
+
+///
+pub struct Service {
+  connection_broker: nats::asynk::Connection,
+  queue_broker: String,
+}
+
+impl std::fmt::Debug for Service {
+  fn fmt(&self, f: &mut std::fmt::Formatter) -> std::fmt::Result {
+    f.debug_struct("beteran-backend-server-edge::member_referrer::service::Service")
+      .finish()
+  }
+}
+
+impl Service {
+  ///
+  pub fn new(connection_broker: nats::asynk::Connection, queue_broker: String) -> Service {
+    Service {
+      connection_broker,
+      queue_broker,
+    }
+  }
+
+  pub async fn subscribe(&self) -> std::result::Result<(), std::boxed::Box<dyn std::error::Error>> {
+    futures::try_join!(
+      self.create_member_referrer(),
+      self.list_member_referrers(),
+      self.get_member_referrer(),
+      self.update_member_referrer(),
+      self.delete_member_referrer(),
+    )
+    .map(|_| ())
+  }
+
+  fn get_client_in_header(
+    &self,
+    message: &nats::asynk::Message,
+  ) -> Result<bpr::models::core::network::Client, bcr::error::rpc::Error> {
+    match &message.headers {
+      Some(headers) => {
+        let client = match headers.get(bpr::c2se::core::network::HEADER_CLIENT) {
+          Some(c) => {
+            let msg = base64::decode(c).map_err(|e| {
+              bcr::error::rpc::Error::Parse(bcr::error::rpc::Parse {
+                message: format!("invalid header: {}", e),
+              })
+            })?;
+            bpr::models::core::network::Client::decode(msg.as_slice()).map_err(|e| {
+              bcr::error::rpc::Error::Parse(bcr::error::rpc::Parse {
+                message: format!("invalid header: {}", e),
+              })
+            })?
+          }
+          None => {
+            return Err(bcr::error::rpc::Error::Parse(bcr::error::rpc::Parse {
+              message: "invalid client information".to_string(),
+            }));
+          }
+        };
+
+        Ok(client)
+      }
+      None => Err(bcr::error::rpc::Error::Parse(bcr::error::rpc::Parse {
+        message: "invalid header".to_string(),
+      })),
+    }
+  }
+
+  async fn create_member_referrer(&self) -> Result<(), Box<dyn std::error::Error>> {
+    let s = self
+      .connection_broker
+      .queue_subscribe(
+        bpr::c2se::backend::member_referrer::SUBJECT_CREATE_MEMBER_REFERRER,
+        self.queue_broker.as_str(),
+      )
+      .await?;
+
+    while let Some(message) = s.next().await {
+      if let Err(e) = async {
+        let client = self.get_client_in_header(&message)?;
+
+        let req =
+          bpr::c2se::member_referrer::CreateMemberReferrerRequest::decode(message.data.as_slice())
+            .map_err(|e| {
+              bcr::error::rpc::Error::InvalidRequest(bcr::error::rpc::InvalidRequest {
+                message: format!("invalid request: {}", e),
+              })
+            })?;
+
+        let ss_create_member_referrer_req = bpr::ss::member_referrer::CreateMemberReferrerRequest {
+          client: Some(client),
+          request: Some(
+            bpr::ss::member_referrer::create_member_referrer_request::Request {
+              member_id: req.member_id,
+            },
+          ),
+        };
+
+        let ss_create_member_referrer_res_msg = self
+          .connection_broker
+          .request(
+            bpr::ss::member_referrer::SUBJECT_CREATE_MEMBER_REFERRER,
+            ss_create_member_referrer_req.encode_to_vec(),
+          )
+          .await
+          .map_err(|e| {
+            bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+              code: bpr::protobuf::rpc::Error::SERVER_00,
+              message: format!("server {}", e),
+              data: None,
+            })
+          })?;
+
+        let ss_create_member_referrer_res =
+          bpr::ss::member_referrer::CreateMemberReferrerResponse::decode(
+            ss_create_member_referrer_res_msg.data.as_slice(),
+          )
+          .map_err(|e| {
+            bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+              code: bpr::protobuf::rpc::Error::SERVER_00,
+              message: format!("server {}", e),
+              data: None,
+            })
+          })?;
+
+        if let Some(e) = ss_create_member_referrer_res.error {
+          return Err(bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+            code: bpr::protobuf::rpc::Error::SERVER_00,
+            message: format!("server {}", e),
+            data: None,
+          }));
+        }
+
+        if let Some(r) = ss_create_member_referrer_res.result {
+          message
+            .respond(
+              bpr::c2se::member_referrer::CreateMemberReferrerResponse {
+                error: None,
+                result: Some(
+                  bpr::c2se::member_referrer::create_member_referrer_response::Result {
+                    member_referrer: r.member_referrer,
+                  },
+                ),
+              }
+              .encode_to_vec(),
+            )
+            .await
+            .map_err(|e| {
+              bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+                code: bpr::protobuf::rpc::Error::SERVER_00,
+                message: format!("server {}", e),
+                data: None,
+              })
+            })?;
+        }
+
+        Ok::<(), bcr::error::rpc::Error>(())
+      }
+      .await
+      {
+        message
+          .respond(
+            bpr::c2se::member_referrer::CreateMemberReferrerResponse {
+              error: Some(bpr::protobuf::rpc::Error::from(e)),
+              result: None,
+            }
+            .encode_to_vec(),
+          )
+          .await?;
+      }
+    }
+
+    Ok(())
+  }
+
+  async fn list_member_referrers(&self) -> Result<(), Box<dyn std::error::Error>> {
+    let s = self
+      .connection_broker
+      .queue_subscribe(
+        bpr::c2se::backend::member_referrer::SUBJECT_LIST_MEMBER_REFERRERS,
+        self.queue_broker.as_str(),
+      )
+      .await?;
+
+    while let Some(message) = s.next().await {
+      if let Err(e) = async {
+        let client = self.get_client_in_header(&message)?;
+
+        let req =
+          bpr::c2se::member_referrer::ListMemberReferrersRequest::decode(message.data.as_slice())
+            .map_err(|e| {
+            bcr::error::rpc::Error::InvalidRequest(bcr::error::rpc::InvalidRequest {
+              message: format!("invalid request: {}", e),
+            })
+          })?;
+
+        let ss_list_member_referrers_req = bpr::ss::member_referrer::ListMemberReferrersRequest {
+          client: Some(client),
+          request: Some(
+            bpr::ss::member_referrer::list_member_referrers_request::Request {
+              pagination: req.pagination,
+              sorts: req.sorts,
+              search: match req.search {
+                Some(s) => Some(
+                  bpr::ss::member_referrer::list_member_referrers_request::request::Search {
+                    member_id: s.member_id,
+                    can_use: s.can_use,
+                    memo_like: s.memo_like,
+                  },
+                ),
+                None => None,
+              },
+            },
+          ),
+        };
+
+        let ss_list_member_referrers_res_msg = self
+          .connection_broker
+          .request(
+            bpr::ss::member_referrer::SUBJECT_LIST_MEMBER_REFERRERS,
+            ss_list_member_referrers_req.encode_to_vec(),
+          )
+          .await
+          .map_err(|e| {
+            bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+              code: bpr::protobuf::rpc::Error::SERVER_00,
+              message: format!("server {}", e),
+              data: None,
+            })
+          })?;
+
+        let ss_list_member_referrers_res =
+          bpr::ss::member_referrer::ListMemberReferrersResponse::decode(
+            ss_list_member_referrers_res_msg.data.as_slice(),
+          )
+          .map_err(|e| {
+            bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+              code: bpr::protobuf::rpc::Error::SERVER_00,
+              message: format!("server {}", e),
+              data: None,
+            })
+          })?;
+
+        if let Some(e) = ss_list_member_referrers_res.error {
+          return Err(bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+            code: bpr::protobuf::rpc::Error::SERVER_00,
+            message: format!("server {}", e),
+            data: None,
+          }));
+        }
+
+        if let Some(r) = ss_list_member_referrers_res.result {
+          message
+            .respond(
+              bpr::c2se::member_referrer::ListMemberReferrersResponse {
+                error: None,
+                result: Some(
+                  bpr::c2se::member_referrer::list_member_referrers_response::Result {
+                    member_referrers: r.member_referrers,
+                  },
+                ),
+              }
+              .encode_to_vec(),
+            )
+            .await
+            .map_err(|e| {
+              bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+                code: bpr::protobuf::rpc::Error::SERVER_00,
+                message: format!("server {}", e),
+                data: None,
+              })
+            })?;
+        }
+
+        Ok::<(), bcr::error::rpc::Error>(())
+      }
+      .await
+      {
+        message
+          .respond(
+            bpr::c2se::member_referrer::ListMemberReferrersResponse {
+              error: Some(bpr::protobuf::rpc::Error::from(e)),
+              result: None,
+            }
+            .encode_to_vec(),
+          )
+          .await?;
+      }
+    }
+
+    Ok(())
+  }
+
+  async fn get_member_referrer(&self) -> Result<(), Box<dyn std::error::Error>> {
+    let s = self
+      .connection_broker
+      .queue_subscribe(
+        bpr::c2se::backend::member_referrer::SUBJECT_GET_MEMBER_REFERRER,
+        self.queue_broker.as_str(),
+      )
+      .await?;
+
+    while let Some(message) = s.next().await {
+      if let Err(e) = async {
+        let client = self.get_client_in_header(&message)?;
+
+        let req =
+          bpr::c2se::member_referrer::GetMemberReferrerRequest::decode(message.data.as_slice())
+            .map_err(|e| {
+              bcr::error::rpc::Error::InvalidRequest(bcr::error::rpc::InvalidRequest {
+                message: format!("invalid request: {}", e),
+              })
+            })?;
+
+        let ss_get_member_referrer_req = bpr::ss::member_referrer::GetMemberReferrerRequest {
+          client: Some(client),
+          request: Some(
+            bpr::ss::member_referrer::get_member_referrer_request::Request { id: req.id },
+          ),
+        };
+
+        let ss_get_member_referrer_res_msg = self
+          .connection_broker
+          .request(
+            bpr::ss::member_referrer::SUBJECT_UPDATE_MEMBER_REFERRER,
+            ss_get_member_referrer_req.encode_to_vec(),
+          )
+          .await
+          .map_err(|e| {
+            bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+              code: bpr::protobuf::rpc::Error::SERVER_00,
+              message: format!("server {}", e),
+              data: None,
+            })
+          })?;
+
+        let ss_get_member_referrer_res =
+          bpr::ss::member_referrer::GetMemberReferrerResponse::decode(
+            ss_get_member_referrer_res_msg.data.as_slice(),
+          )
+          .map_err(|e| {
+            bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+              code: bpr::protobuf::rpc::Error::SERVER_00,
+              message: format!("server {}", e),
+              data: None,
+            })
+          })?;
+
+        if let Some(e) = ss_get_member_referrer_res.error {
+          return Err(bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+            code: bpr::protobuf::rpc::Error::SERVER_00,
+            message: format!("server {}", e),
+            data: None,
+          }));
+        }
+
+        if let Some(r) = ss_get_member_referrer_res.result {
+          message
+            .respond(
+              bpr::c2se::member_referrer::GetMemberReferrerResponse {
+                error: None,
+                result: Some(
+                  bpr::c2se::member_referrer::get_member_referrer_response::Result {
+                    member_referrer: r.member_referrer,
+                  },
+                ),
+              }
+              .encode_to_vec(),
+            )
+            .await
+            .map_err(|e| {
+              bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+                code: bpr::protobuf::rpc::Error::SERVER_00,
+                message: format!("server {}", e),
+                data: None,
+              })
+            })?;
+        }
+
+        Ok::<(), bcr::error::rpc::Error>(())
+      }
+      .await
+      {
+        message
+          .respond(
+            bpr::c2se::member_referrer::GetMemberReferrerResponse {
+              error: Some(bpr::protobuf::rpc::Error::from(e)),
+              result: None,
+            }
+            .encode_to_vec(),
+          )
+          .await?;
+      }
+    }
+
+    Ok(())
+  }
+
+  async fn update_member_referrer(&self) -> Result<(), Box<dyn std::error::Error>> {
+    let s = self
+      .connection_broker
+      .queue_subscribe(
+        bpr::c2se::backend::member_referrer::SUBJECT_UPDATE_MEMBER_REFERRER,
+        self.queue_broker.as_str(),
+      )
+      .await?;
+
+    while let Some(message) = s.next().await {
+      if let Err(e) = async {
+        let client = self.get_client_in_header(&message)?;
+
+        let req =
+          bpr::c2se::member_referrer::UpdateMemberReferrerRequest::decode(message.data.as_slice())
+            .map_err(|e| {
+              bcr::error::rpc::Error::InvalidRequest(bcr::error::rpc::InvalidRequest {
+                message: format!("invalid request: {}", e),
+              })
+            })?;
+
+        let ss_update_member_referrer_req = bpr::ss::member_referrer::UpdateMemberReferrerRequest {
+          client: Some(client),
+          request: Some(
+            bpr::ss::member_referrer::update_member_referrer_request::Request {
+              id: req.id,
+              can_use: req.can_use,
+              memo: req.memo,
+            },
+          ),
+        };
+
+        let ss_update_member_referrer_res_msg = self
+          .connection_broker
+          .request(
+            bpr::ss::member_referrer::SUBJECT_UPDATE_MEMBER_REFERRER,
+            ss_update_member_referrer_req.encode_to_vec(),
+          )
+          .await
+          .map_err(|e| {
+            bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+              code: bpr::protobuf::rpc::Error::SERVER_00,
+              message: format!("server {}", e),
+              data: None,
+            })
+          })?;
+
+        let ss_update_member_referrer_res =
+          bpr::ss::member_referrer::UpdateMemberReferrerResponse::decode(
+            ss_update_member_referrer_res_msg.data.as_slice(),
+          )
+          .map_err(|e| {
+            bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+              code: bpr::protobuf::rpc::Error::SERVER_00,
+              message: format!("server {}", e),
+              data: None,
+            })
+          })?;
+
+        if let Some(e) = ss_update_member_referrer_res.error {
+          return Err(bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+            code: bpr::protobuf::rpc::Error::SERVER_00,
+            message: format!("server {}", e),
+            data: None,
+          }));
+        }
+
+        if let Some(r) = ss_update_member_referrer_res.result {
+          message
+            .respond(
+              bpr::c2se::member_referrer::UpdateMemberReferrerResponse {
+                error: None,
+                result: Some(
+                  bpr::c2se::member_referrer::update_member_referrer_response::Result {
+                    member_referrer: r.member_referrer,
+                  },
+                ),
+              }
+              .encode_to_vec(),
+            )
+            .await
+            .map_err(|e| {
+              bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+                code: bpr::protobuf::rpc::Error::SERVER_00,
+                message: format!("server {}", e),
+                data: None,
+              })
+            })?;
+        }
+
+        Ok::<(), bcr::error::rpc::Error>(())
+      }
+      .await
+      {
+        message
+          .respond(
+            bpr::c2se::member_referrer::UpdateMemberReferrerResponse {
+              error: Some(bpr::protobuf::rpc::Error::from(e)),
+              result: None,
+            }
+            .encode_to_vec(),
+          )
+          .await?;
+      }
+    }
+
+    Ok(())
+  }
+
+  async fn delete_member_referrer(&self) -> Result<(), Box<dyn std::error::Error>> {
+    let s = self
+      .connection_broker
+      .queue_subscribe(
+        bpr::c2se::backend::member_referrer::SUBJECT_DELETE_MEMBER_REFERRER,
+        self.queue_broker.as_str(),
+      )
+      .await?;
+
+    while let Some(message) = s.next().await {
+      if let Err(e) = async {
+        let client = self.get_client_in_header(&message)?;
+
+        let req =
+          bpr::c2se::member_referrer::DeleteMemberReferrerRequest::decode(message.data.as_slice())
+            .map_err(|e| {
+              bcr::error::rpc::Error::InvalidRequest(bcr::error::rpc::InvalidRequest {
+                message: format!("invalid request: {}", e),
+              })
+            })?;
+
+        let ss_delete_member_referrer_req = bpr::ss::member_referrer::DeleteMemberReferrerRequest {
+          client: Some(client),
+          request: Some(
+            bpr::ss::member_referrer::delete_member_referrer_request::Request { id: req.id },
+          ),
+        };
+
+        let ss_delete_member_referrer_res_msg = self
+          .connection_broker
+          .request(
+            bpr::ss::member_referrer::SUBJECT_DELETE_MEMBER_REFERRER,
+            ss_delete_member_referrer_req.encode_to_vec(),
+          )
+          .await
+          .map_err(|e| {
+            bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+              code: bpr::protobuf::rpc::Error::SERVER_00,
+              message: format!("server {}", e),
+              data: None,
+            })
+          })?;
+
+        let ss_delete_member_referrer_res =
+          bpr::ss::member_referrer::DeleteMemberReferrerResponse::decode(
+            ss_delete_member_referrer_res_msg.data.as_slice(),
+          )
+          .map_err(|e| {
+            bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+              code: bpr::protobuf::rpc::Error::SERVER_00,
+              message: format!("server {}", e),
+              data: None,
+            })
+          })?;
+
+        if let Some(e) = ss_delete_member_referrer_res.error {
+          return Err(bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+            code: bpr::protobuf::rpc::Error::SERVER_00,
+            message: format!("server {}", e),
+            data: None,
+          }));
+        }
+
+        if let Some(r) = ss_delete_member_referrer_res.result {
+          message
+            .respond(
+              bpr::c2se::member_referrer::DeleteMemberReferrerResponse {
+                error: None,
+                result: Some(
+                  bpr::c2se::member_referrer::delete_member_referrer_response::Result {},
+                ),
+              }
+              .encode_to_vec(),
+            )
+            .await
+            .map_err(|e| {
+              bcr::error::rpc::Error::Server(bcr::error::rpc::Server {
+                code: bpr::protobuf::rpc::Error::SERVER_00,
+                message: format!("server {}", e),
+                data: None,
+              })
+            })?;
+        }
+
+        Ok::<(), bcr::error::rpc::Error>(())
+      }
+      .await
+      {
+        message
+          .respond(
+            bpr::c2se::member_referrer::DeleteMemberReferrerResponse {
+              error: Some(bpr::protobuf::rpc::Error::from(e)),
+              result: None,
+            }
+            .encode_to_vec(),
+          )
+          .await?;
+      }
+    }
+
+    Ok(())
+  }
+}