diff --git a/backend/mpc-system/services/message-router/adapters/input/grpc/message_grpc_handler.go b/backend/mpc-system/services/message-router/adapters/input/grpc/message_grpc_handler.go
index 2fe78ade..a1d0294b 100644
--- a/backend/mpc-system/services/message-router/adapters/input/grpc/message_grpc_handler.go
+++ b/backend/mpc-system/services/message-router/adapters/input/grpc/message_grpc_handler.go
@@ -556,6 +556,7 @@ func (s *MessageRouterServer) JoinSession(
 			ThresholdT:      coordResp.SessionInfo.ThresholdT,
 			MessageHash:     coordResp.SessionInfo.MessageHash,
 			KeygenSessionId: coordResp.SessionInfo.KeygenSessionId,
+			Status:          coordResp.SessionInfo.Status, // 修复: 添加缺失的 Status 字段
 		}
 	}