diff --git a/core/nstatus/grpc_interceptor.go b/core/nstatus/grpc_interceptor.go
index a9a6397..f063c98 100644
--- a/core/nstatus/grpc_interceptor.go
+++ b/core/nstatus/grpc_interceptor.go
@@ -2,7 +2,6 @@ package nstatus
 
 import (
 	"context"
-	"github.com/pkg/errors"
 	"google.golang.org/grpc"
 	"google.golang.org/grpc/codes"
 	"google.golang.org/grpc/metadata"
@@ -16,8 +15,7 @@ func UnaryServerInterceptor() grpc.UnaryServerInterceptor {
 	return func(ctx context.Context, req interface{}, info *grpc.UnaryServerInfo, handler grpc.UnaryHandler) (resp interface{}, err error) {
 		resp, err = handler(ctx, req)
 		if err != nil {
-			cause := errors.Cause(err)
-			e := ConvertErr(cause)
+			e := ConvertErr(err)
 			if e != nil {
 				writeResultTypeCtx(ctx, e)
 				// 转换为grpc-err