diff --git a/backend/internal/store/store.go b/backend/internal/store/store.go
index 575cce5..78b5e10 100644
--- a/backend/internal/store/store.go
+++ b/backend/internal/store/store.go
@@ -995,7 +995,12 @@ func (s *Store) Create(in model.PostInput) (model.Post, error) {
 		}
 	}
 	p.ID = id
-	if err := s.setTags(id, in.Tags); err != nil {
+	// 标签是长文的组织方式；短文（类推微博）一律不打标签
+	tags := in.Tags
+	if p.Kind == model.KindShort {
+		tags = nil
+	}
+	if err := s.setTags(id, tags); err != nil {
 		return p, err
 	}
 	return s.Get(id)
@@ -1054,8 +1059,13 @@ func (s *Store) Update(id int64, in model.PostInput) (model.Post, error) {
 		p.PublishedAt, p.UpdatedAt, p.ReadingMinutes, encodeImages(p.Images), encodeLinkCard(p.LinkCard), id); err != nil {
 		return p, err
 	}
-	if in.Tags != nil {
-		if err := s.setTags(id, in.Tags); err != nil {
+	// 短文一律无标签：切换类型或直接保存时都把旧标签清掉
+	if in.Tags != nil || p.Kind == model.KindShort {
+		tags := in.Tags
+		if p.Kind == model.KindShort {
+			tags = nil
+		}
+		if err := s.setTags(id, tags); err != nil {
 			return p, err
 		}
 	}
diff --git a/frontend/src/admin/EditorView.vue b/frontend/src/admin/EditorView.vue
index 7b60385..6579bd5 100644
--- a/frontend/src/admin/EditorView.vue
+++ b/frontend/src/admin/EditorView.vue
@@ -365,6 +365,14 @@ onBeforeRouteLeave(() => {
 
 // ---------- 标签 ----------
 
+// 标签是长文的组织方式；切到短文时把已选的清掉（后端落库时也会强制丢弃）
+watch(
+  () => form.kind,
+  (k) => {
+    if (k === 'short') form.tags = []
+  }
+)
+
 function addTag() {
   const v = tagInput.value.trim().replace(/[,，]$/, '')
   if (!v) return
@@ -848,7 +856,7 @@ const tbGroups = computed(() => [
             ></textarea>
           </div>
 
-          <div class="field">
+          <div v-if="form.kind !== 'short'" class="field">
             <label>标签</label>
             <div v-if="form.tags.length" style="display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px;">
               <span v-for="t in form.tags" :key="t" class="chip">