diff --git a/relay/channel/api_request.go b/relay/channel/api_request.go
index a50d5bdb5..a065caff7 100644
--- a/relay/channel/api_request.go
+++ b/relay/channel/api_request.go
@@ -264,9 +264,8 @@ func doRequest(c *gin.Context, req *http.Request, info *common.RelayInfo) (*http
 	}
 
 	resp, err := client.Do(req)
-
 	if err != nil {
-		return nil, err
+		return nil, types.NewError(err, types.ErrorCodeDoRequestFailed, types.ErrOptionWithHideErrMsg("upstream error: do request failed"))
 	}
 	if resp == nil {
 		return nil, errors.New("resp is nil")
diff --git a/types/error.go b/types/error.go
index f653e9a28..883ee0641 100644
--- a/types/error.go
+++ b/types/error.go
@@ -185,6 +185,14 @@ func (e *NewAPIError) ToClaudeError() ClaudeError {
 type NewAPIErrorOptions func(*NewAPIError)
 
 func NewError(err error, errorCode ErrorCode, ops ...NewAPIErrorOptions) *NewAPIError {
+	var newErr *NewAPIError
+	// 保留深层传递的 new err
+	if errors.As(err, &newErr) {
+		for _, op := range ops {
+			op(newErr)
+		}
+		return newErr
+	}
 	e := &NewAPIError{
 		Err:        err,
 		RelayError: nil,
@@ -199,8 +207,21 @@ func NewError(err error, errorCode ErrorCode, ops ...NewAPIErrorOptions) *NewAPI
 }
 
 func NewOpenAIError(err error, errorCode ErrorCode, statusCode int, ops ...NewAPIErrorOptions) *NewAPIError {
-	if errorCode == ErrorCodeDoRequestFailed {
-		err = errors.New("upstream error: do request failed")
+	var newErr *NewAPIError
+	// 保留深层传递的 new err
+	if errors.As(err, &newErr) {
+		if newErr.RelayError == nil {
+			openaiError := OpenAIError{
+				Message: newErr.Error(),
+				Type:    string(errorCode),
+				Code:    errorCode,
+			}
+			newErr.RelayError = openaiError
+		}
+		for _, op := range ops {
+			op(newErr)
+		}
+		return newErr
 	}
 	openaiError := OpenAIError{
 		Message: err.Error(),
@@ -305,6 +326,15 @@ func ErrOptionWithNoRecordErrorLog() NewAPIErrorOptions {
 	}
 }
 
+func ErrOptionWithHideErrMsg(replaceStr string) NewAPIErrorOptions {
+	return func(e *NewAPIError) {
+		if common.DebugEnabled {
+			fmt.Printf("ErrOptionWithHideErrMsg: %s, origin error: %s", replaceStr, e.Err)
+		}
+		e.Err = errors.New(replaceStr)
+	}
+}
+
 func IsRecordErrorLog(e *NewAPIError) bool {
 	if e == nil {
 		return false