diff --git a/pages/case/plan-list.vue b/pages/case/plan-list.vue
index ccbe7e8..6df936a 100644
--- a/pages/case/plan-list.vue
+++ b/pages/case/plan-list.vue
@@ -240,10 +240,21 @@ function onSearchInput() {
 
 function canToggleFavorite(plan) {
   if (!plan || !plan._id) return false;
+  if (isCreatedByCurrentUser(plan)) return false;
   if (activeViewType.value !== 'my') return true;
   return Boolean(plan.isFavorite);
 }
 
+function isCreatedByCurrentUser(plan = {}) {
+  const userId = getUserId();
+  if (!userId) return false;
+  if (String(plan.createor || plan.creator || '') === userId) return true;
+  const signature = plan.creatorSignature && typeof plan.creatorSignature === 'object'
+    ? plan.creatorSignature
+    : null;
+  return signature?.type === 'personal' && String(signature.person?.userId || '') === userId;
+}
+
 async function toggleFavorite(plan) {
   const corpId = getCorpId();
   const userId = getUserId();