diff --git a/engine.go b/engine.go
index 70da0f3..89c47a0 100644
--- a/engine.go
+++ b/engine.go
@@ -1405,11 +1405,12 @@ func (e *Engine) WorkingDiff(name, scope string) (*DiffResult, error) {
 		statArgs = append(statArgs, "--stat")
 	}
 	if statOut, serr := gitRun(s.cfg.RepoPath, 30*time.Second, statArgs...); serr == nil {
+		statOut = stripWarnings(statOut)
 		res.Stat = statOut
 		res.Files = parseStatFiles(statOut)
 	}
 	if textOut, terr := gitRun(s.cfg.RepoPath, 60*time.Second, args...); terr == nil {
-		res.Text = textOut
+		res.Text = stripWarnings(textOut)
 	} else {
 		res.Text = terr.Error()
 	}
@@ -1419,6 +1420,19 @@ func (e *Engine) WorkingDiff(name, scope string) (*DiffResult, error) {
 	return res, nil
 }
 
+// stripWarnings 去掉 git 在 stderr 输出的环境告警（如 autocrlf 提示），避免污染差异展示
+func stripWarnings(s string) string {
+	lines := strings.Split(s, "\n")
+	out := make([]string, 0, len(lines))
+	for _, l := range lines {
+		if strings.HasPrefix(l, "warning:") {
+			continue
+		}
+		out = append(out, l)
+	}
+	return strings.Join(out, "\n")
+}
+
 // parseStatFiles 解析 `git diff --stat` 输出为单文件增删统计
 func parseStatFiles(stat string) []DiffFile {
 	var files []DiffFile