diff --git a/build.rs b/build.rs
index f5def43..ec3f3ca 100644
--- a/build.rs
+++ b/build.rs
@@ -56,6 +56,8 @@ static TARGETS: Lazy<HashMap<&str, Vec<&str>>> = Lazy::new(|| {
       "./proto/c2se/backend/site.proto",
       "./proto/c2se/backend/account.proto",
       "./proto/c2se/backend/identity.proto",
+      "./proto/c2se/backend/member_class.proto",
+      "./proto/c2se/backend/member_level.proto",
       "./proto/c2se/backend/member.proto",
       "./proto/c2se/frontend/account.proto",
       "./proto/c2se/frontend/identity.proto",
diff --git a/proto/c2se/backend/member.proto b/proto/c2se/backend/member.proto
index 89d7277..4d52dc3 100644
--- a/proto/c2se/backend/member.proto
+++ b/proto/c2se/backend/member.proto
@@ -15,11 +15,12 @@ message CreateMemberRequest {
   string site_id = 1;
   string member_class_id = 2;
   string member_level_id = 3;
-  optional string referrer_member_id = 4;
+  optional string referrer_member_username = 4;
   string username = 5;
-  string nickname = 6;
-  optional string mobile_phone_number = 7;
-  bet.beteran.member.MemberState state = 8;
+  string password = 6;
+  string nickname = 7;
+  optional string mobile_phone_number = 8;
+  bet.beteran.member.MemberState state = 9;
 }
 
 message CreateMemberResponse {
diff --git a/proto/c2se/backend/member_class.proto b/proto/c2se/backend/member_class.proto
new file mode 100644
index 0000000..14684d4
--- /dev/null
+++ b/proto/c2se/backend/member_class.proto
@@ -0,0 +1,83 @@
+syntax = "proto3";
+
+package bet.beteran.c2se.backend.member_class;
+
+import "protobuf/rpc/error.proto";
+import "protobuf/pagination/pagination.proto";
+import "protobuf/pagination/search.proto";
+import "protobuf/pagination/sort.proto";
+
+import "models/member/member_class.proto";
+
+
+// subject = bet.beteran.c2se.backend.member_class.CreateMemberClass
+message CreateMemberClassRequest {
+  optional string parent_id = 1;
+  string name = 2;
+}
+
+message CreateMemberClassResponse {
+  message Result {
+    bet.beteran.member.MemberClass member_class = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
+
+// subject = bet.beteran.c2se.backend.member_class.ListMemberClasses
+message ListMemberClassesRequest {
+  optional bet.protobuf.pagination.Pagination pagination = 1;
+  repeated bet.protobuf.pagination.Search searches = 2;
+  repeated bet.protobuf.pagination.Sort sorts = 3;
+  optional string name_like = 8;
+}
+
+message ListMemberClasssResponse {
+  message Result {
+    repeated bet.beteran.member.MemberClass member_classes = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
+
+
+
+// subject = bet.beteran.c2se.backend.member_class.GetMemberClass
+message GetMemberClassRequest {
+  string id = 1;
+}
+
+message GetMemberClassResponse {
+  message Result {
+    bet.beteran.member.MemberClass member_class = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
+
+// subject = bet.beteran.c2se.backend.member_class.UpdateMemberClass
+message UpdateMemberClassRequest {
+  string id = 1;
+  optional string parent_id = 2;
+  string name = 3;
+}
+
+message UpdateMemberClassResponse {
+  message Result {
+    bet.beteran.member.MemberClass member_class = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
+
+// subject = bet.beteran.c2se.backend.member_class.DeleteMemberClass
+message DeleteMemberClassRequest {
+  string id = 1;
+}
+
+message DeleteMemberClassResponse {
+  message Result {
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
diff --git a/proto/c2se/backend/member_level.proto b/proto/c2se/backend/member_level.proto
new file mode 100644
index 0000000..12946de
--- /dev/null
+++ b/proto/c2se/backend/member_level.proto
@@ -0,0 +1,83 @@
+syntax = "proto3";
+
+package bet.beteran.c2se.backend.member_level;
+
+import "protobuf/rpc/error.proto";
+import "protobuf/pagination/pagination.proto";
+import "protobuf/pagination/search.proto";
+import "protobuf/pagination/sort.proto";
+
+import "models/member/member_level.proto";
+
+
+// subject = bet.beteran.c2se.backend.member_level.CreateMemberLevel
+message CreateMemberLevelRequest {
+  string name = 2;
+  uint32 sort_order = 3;
+}
+
+message CreateMemberLevelResponse {
+  message Result {
+    bet.beteran.member.MemberLevel member_level = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
+
+// subject = bet.beteran.c2se.backend.member_level.ListMemberLeveles
+message ListMemberLevelesRequest {
+  optional bet.protobuf.pagination.Pagination pagination = 1;
+  repeated bet.protobuf.pagination.Search searches = 2;
+  repeated bet.protobuf.pagination.Sort sorts = 3;
+  optional string name_like = 8;
+}
+
+message ListMemberLevelsResponse {
+  message Result {
+    repeated bet.beteran.member.MemberLevel member_levels = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
+
+
+
+// subject = bet.beteran.c2se.backend.member_level.GetMemberLevel
+message GetMemberLevelRequest {
+  string id = 1;
+}
+
+message GetMemberLevelResponse {
+  message Result {
+    bet.beteran.member.MemberLevel member_level = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
+
+// subject = bet.beteran.c2se.backend.member_level.UpdateMemberLevel
+message UpdateMemberLevelRequest {
+  string id = 1;
+  optional string parent_id = 2;
+  string name = 3;
+}
+
+message UpdateMemberLevelResponse {
+  message Result {
+    bet.beteran.member.MemberLevel member_level = 1;
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
+
+// subject = bet.beteran.c2se.backend.member_level.DeleteMemberLevel
+message DeleteMemberLevelRequest {
+  string id = 1;
+}
+
+message DeleteMemberLevelResponse {
+  message Result {
+  }
+  optional bet.protobuf.rpc.Error error = 1;
+  optional Result result = 2;
+}
diff --git a/proto/models/member/member_class.proto b/proto/models/member/member_class.proto
index 051607c..8c8b302 100644
--- a/proto/models/member/member_class.proto
+++ b/proto/models/member/member_class.proto
@@ -8,5 +8,4 @@ message MemberClass {
   string name = 3;
   uint64 created_at = 4;
   uint64 updated_at = 5;
-  optional uint64 deleted_at = 6;
 }
diff --git a/proto/models/member/member_level.proto b/proto/models/member/member_level.proto
index 17312ff..1b43eef 100644
--- a/proto/models/member/member_level.proto
+++ b/proto/models/member/member_level.proto
@@ -8,5 +8,4 @@ message MemberLevel {
   uint32 sort_order = 3;
   uint64 created_at = 4;
   uint64 updated_at = 5;
-  optional uint64 deleted_at = 6;
 }
diff --git a/proto/ss/member/member.proto b/proto/ss/member/member.proto
index f889313..62c66ad 100644
--- a/proto/ss/member/member.proto
+++ b/proto/ss/member/member.proto
@@ -16,11 +16,12 @@ message CreateMemberRequest {
   string site_id = 2;
   string member_class_id = 3;
   string member_level_id = 4;
-  optional string referrer_member_id = 5;
+  optional string referrer_member_username = 5;
   string username = 6;
-  string nickname = 7;
-  optional string mobile_phone_number = 8;
-  bet.beteran.member.MemberState state = 9;
+  string password = 7;
+  string nickname = 8;
+  optional string mobile_phone_number = 9;
+  bet.beteran.member.MemberState state = 10;
 }
 
 message CreateMemberResponse {