diff --git a/internal/service/post_service.go b/internal/service/post_service.go
index 2916107..b24ca98 100644
--- a/internal/service/post_service.go
+++ b/internal/service/post_service.go
@@ -251,6 +251,9 @@ func (s *PostService) SubmitForAudit(postID uint) error {
 	if err != nil {
 		return err
 	}
+	if post.IsLocked {
+		return common.ErrPostCannotEdit
+	}
 	if post.Status != model.PostStatusDraft && post.Status != model.PostStatusRejected {
 		return common.ErrPostCannotSubmit
 	}
diff --git a/templates/MetaLab-2026/html/posts/show.html b/templates/MetaLab-2026/html/posts/show.html
index dfc7996..18818aa 100644
--- a/templates/MetaLab-2026/html/posts/show.html
+++ b/templates/MetaLab-2026/html/posts/show.html
@@ -36,7 +36,7 @@
         {{if and $.Post (or (eq $.Post.UserID $.UID) $.CanAccessAdmin) (ne $.Post.Status "pending") (not $.Post.IsLocked)}}
         <a href="/studio/write?id={{$.Post.ID}}" class="btn btn-secondary">编辑</a>
         {{end}}
-        {{if and $.Post (eq $.Post.UserID $.UID) (or (eq $.Post.Status "draft") (eq $.Post.Status "rejected"))}}
+        {{if and $.Post (eq $.Post.UserID $.UID) (or (eq $.Post.Status "draft") (eq $.Post.Status "rejected")) (not $.Post.IsLocked)}}
         <button class="btn btn-primary" id="submitAuditBtn" data-id="{{$.Post.ID}}">提交审核</button>
         {{end}}
     </div>