diff --git a/build.rs b/build.rs
index a17c4bc..077ebba 100644
--- a/build.rs
+++ b/build.rs
@@ -51,13 +51,20 @@ static TARGETS: Lazy<HashMap<&str, Vec<&str>>> = Lazy::new(|| {
     vec![
       "./proto/c2se/core/network.proto",
       "./proto/c2se/common/identity.proto",
+      "./proto/c2se/backend/site.proto",
       "./proto/c2se/backend/identity.proto",
       "./proto/c2se/backend/member.proto",
       "./proto/c2se/frontend/identity.proto",
     ],
   );
 
-  m.insert("ss", vec!["./proto/ss/member/identity.proto"]);
+  m.insert(
+    "ss",
+    vec![
+      "./proto/ss/domain/site.proto",
+      "./proto/ss/member/identity.proto",
+    ],
+  );
 
   m
 });
diff --git a/proto/c2se/backend/site.proto b/proto/c2se/backend/site.proto
new file mode 100644
index 0000000..adf0a97
--- /dev/null
+++ b/proto/c2se/backend/site.proto
@@ -0,0 +1,68 @@
+syntax = "proto3";
+
+package bet.beteran.c2se.backend.site;
+
+import "protobuf/rpc/error.proto";
+import "protobuf/pagination/pagination.proto";
+import "protobuf/pagination/search.proto";
+import "protobuf/pagination/sort.proto";
+import "models/domain/site.proto";
+
+// subject = bet.beteran.c2se.backend.site.ListSites
+message ListSitesRequest {
+  optional bet.protobuf.pagination.Pagination pagination = 1;
+  repeated bet.protobuf.pagination.Search searches = 2;
+  repeated bet.protobuf.pagination.Sort sorts = 3;
+}
+
+message ListSitesResponse {
+  message Result {
+    repeated bet.beteran.domain.Site sites = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
+
+// subject = bet.beteran.c2se.backend.site.CreateSite
+message CreateSiteRequest {
+  string url = 1;
+  bool show = 2;
+  bool can_use = 3;
+}
+
+message CreateSiteResponse {
+  message Result {
+    bet.beteran.domain.Site site = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
+
+// subject = bet.beteran.c2se.backend.site.UpdateSite
+message UpdateSiteRequest {
+  string id = 1;
+  string url = 2;
+  bool show = 3;
+  bool can_use = 4;
+}
+
+message UpdateSiteResponse {
+  message Result {
+    bet.beteran.domain.Site site = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
+
+
+// subject = bet.beteran.c2se.backend.site.DeleteSite
+message DeleteSiteRequest {
+  string id = 1;
+}
+
+message DeleteSiteResponse {
+  message Result {
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
diff --git a/proto/ss/domain/site.proto b/proto/ss/domain/site.proto
new file mode 100644
index 0000000..6fb5559
--- /dev/null
+++ b/proto/ss/domain/site.proto
@@ -0,0 +1,73 @@
+syntax = "proto3";
+
+package bet.beteran.ss.domain.site;
+
+import "protobuf/rpc/error.proto";
+import "protobuf/pagination/pagination.proto";
+import "protobuf/pagination/search.proto";
+import "protobuf/pagination/sort.proto";
+import "models/core/network.proto";
+import "models/domain/site.proto";
+
+// subject = bet.beteran.ss.domain.site.ListSites;
+message ListSitesRequest {
+  bet.beteran.core.network.Client client = 1;
+  optional bet.protobuf.pagination.Pagination pagination = 2;
+  repeated bet.protobuf.pagination.Search searches = 3;
+  repeated bet.protobuf.pagination.Sort sorts = 4;
+}
+
+message ListSitesResponse {
+  message Result {
+    repeated bet.beteran.domain.Site sites = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
+
+// subject = bet.beteran.ss.domain.site.CreateSite;
+message CreateSiteRequest {
+  bet.beteran.core.network.Client client = 1;
+  string url = 2;
+  bool show = 3;
+  bool can_use = 4;
+}
+
+message CreateSiteResponse {
+  message Result {
+    bet.beteran.domain.Site site = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
+
+// subject = bet.beteran.ss.domain.site.UpdateSite
+message UpdateSiteRequest {
+  bet.beteran.core.network.Client client = 1;
+  string id = 2;
+  string url = 3;
+  bool show = 4;
+  bool can_use = 5;
+}
+
+message UpdateSiteResponse {
+  message Result {
+    bet.beteran.domain.Site site = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
+
+
+// subject = bet.beteran.ss.domain.site.DeleteSite
+message DeleteSiteRequest {
+  bet.beteran.core.network.Client client = 1;
+  string id = 2;
+}
+
+message DeleteSiteResponse {
+  message Result {
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}