diff --git a/frontend/src/App.vue b/frontend/src/App.vue
index a57d856..a8d0056 100644
--- a/frontend/src/App.vue
+++ b/frontend/src/App.vue
@@ -321,7 +321,6 @@ console.log('App.vue: script setup completed')
       <div class="flex flex-col gap-2 shrink-0 overflow-hidden" style="flex-basis: 400px; max-width: 480px; min-width: 320px;">
         <!-- Frame 5: 字体选择 - 弹性高度 -->
         <div class="flex-[2] border border-solid border-[#f7e0e0] rounded-lg p-1.5 flex flex-col gap-2 overflow-hidden min-h-0">
-          <h2 class="text-base text-black shrink-0 leading-none">字体选择</h2>
           <div v-overflow-aware class="scrollbar-hover flex-1 overflow-y-auto overflow-x-hidden pr-2">
             <FontSelector />
           </div>
diff --git a/frontend/src/assets/icons/search.svg b/frontend/src/assets/icons/search.svg
new file mode 100644
index 0000000..b6d1550
--- /dev/null
+++ b/frontend/src/assets/icons/search.svg
@@ -0,0 +1,4 @@
+<svg xmlns="http://www.w3.org/2000/svg" width="32" height="32" fill="none" viewBox="0 0 32 32">
+  <rect width="32" height="32" fill="#8552A1" rx="10" transform="matrix(-1 0 0 1 32 0)"/>
+  <path fill="#FEFDFE" d="m24.845 22.204-5.101-5.105-2.64 2.64 5.105 5.104a1.085 1.085 0 0 0 1.527 0l1.108-1.108a1.09 1.09 0 0 0 0-1.531ZM17.22 18.6l1.382-1.382-1.576-1.576a5.512 5.512 0 0 0-.63-7.032 5.51 5.51 0 0 0-7.785 0c-2.15 2.146-2.146 5.635 0 7.785a5.512 5.512 0 0 0 7.033.63l1.575 1.576Zm-7.541-3.288a3.983 3.983 0 0 1 0-5.635 3.983 3.983 0 0 1 5.635 0 3.983 3.983 0 0 1 0 5.635 3.983 3.983 0 0 1-5.635 0Z"/>
+</svg>
diff --git a/frontend/src/components/FontSelector.vue b/frontend/src/components/FontSelector.vue
index 8991d37..2d91526 100644
--- a/frontend/src/components/FontSelector.vue
+++ b/frontend/src/components/FontSelector.vue
@@ -1,18 +1,72 @@
 <script setup lang="ts">
-import { computed } from 'vue'
+import { computed, ref } from 'vue'
 import { useFontStore } from '../stores/fontStore'
 import FontTree from './FontTree.vue'
+import searchIcon from '../assets/icons/search.svg'
 
 const fontStore = useFontStore()
+const searchKeyword = ref('')
 
 const fontTree = computed(() => fontStore.fontTree)
+const normalizedSearchKeyword = computed(() => searchKeyword.value.trim().toLowerCase())
+const hasSearchKeyword = computed(() => normalizedSearchKeyword.value.length > 0)
+const hasMatchedFonts = computed(() => {
+  if (!hasSearchKeyword.value) {
+    return fontTree.value.length > 0
+  }
+
+  const keyword = normalizedSearchKeyword.value
+  return fontTree.value.some((node) => {
+    if (node.type !== 'category') {
+      return false
+    }
+
+    if (node.name.toLowerCase().includes(keyword)) {
+      return true
+    }
+
+    return (node.children ?? []).some(child => {
+      return child.type === 'font' && child.name.toLowerCase().includes(keyword)
+    })
+  })
+})
 </script>
 
 <template>
-  <div class="space-y-2">
-    <div v-if="fontTree.length === 0" class="text-sm text-gray-500 text-center py-8">
-      暂无字体
+  <div class="space-y-2 pb-1">
+    <div class="sticky top-0 z-10 bg-white pt-1 pb-1">
+      <div class="flex items-center gap-3">
+        <div class="text-[16px] leading-none text-black font-bold shrink-0">
+          选择预览字体
+        </div>
+        <div class="flex-1 min-w-0">
+          <div class="h-8 rounded-[10px] bg-[#F3EDF7] pl-2 flex items-center">
+            <input
+              v-model="searchKeyword"
+              type="text"
+              placeholder="输入搜索字体名称"
+              aria-label="字体搜索"
+              class="flex-1 min-w-0 bg-transparent border-none outline-none text-[14px] text-black placeholder-[#a2a0a9]"
+            />
+            <button
+              type="button"
+              class="w-8 h-8 shrink-0 p-0 border-0 bg-transparent flex items-center justify-center"
+              aria-hidden="true"
+            >
+              <img :src="searchIcon" alt="" class="w-[24px] h-[24px]" />
+            </button>
+          </div>
+        </div>
+      </div>
     </div>
-    <FontTree v-else :nodes="fontTree" />
+
+    <div v-if="!hasMatchedFonts" class="text-sm text-gray-500 text-center py-8">
+      {{ hasSearchKeyword ? '未找到匹配字体' : '暂无字体' }}
+    </div>
+    <FontTree
+      v-else
+      :nodes="fontTree"
+      :search-keyword="normalizedSearchKeyword"
+    />
   </div>
 </template>
diff --git a/frontend/src/components/FontTree.vue b/frontend/src/components/FontTree.vue
index 26be29c..1d19084 100644
--- a/frontend/src/components/FontTree.vue
+++ b/frontend/src/components/FontTree.vue
@@ -1,4 +1,5 @@
 <script setup lang="ts">
+import { computed } from 'vue'
 import selectAllIcon from '../assets/icons/selectall.svg'
 import unselectAllIcon from '../assets/icons/unselectall.svg'
 import type { FontTreeNode } from '../types/font'
@@ -6,11 +7,47 @@ import { useFontStore } from '../stores/fontStore'
 
 const props = defineProps<{
   nodes: FontTreeNode[]
+  searchKeyword?: string
 }>()
 
 const fontStore = useFontStore()
+const normalizedSearchKeyword = computed(() => (props.searchKeyword ?? '').trim().toLowerCase())
+const isSearchMode = computed(() => normalizedSearchKeyword.value.length > 0)
+
+type FontLeafNode = FontTreeNode & { fontInfo: NonNullable<FontTreeNode['fontInfo']> }
+
+function getVisibleChildren(node: FontTreeNode): FontLeafNode[] {
+  if (node.type !== 'category' || !node.children) {
+    return []
+  }
+
+  const fontChildren = node.children.filter(
+    (child): child is FontLeafNode => child.type === 'font' && !!child.fontInfo,
+  )
+  if (!isSearchMode.value) {
+    return fontChildren
+  }
+
+  const keyword = normalizedSearchKeyword.value
+  if (node.name.toLowerCase().includes(keyword)) {
+    return fontChildren
+  }
+
+  return fontChildren.filter(child => child.name.toLowerCase().includes(keyword))
+}
+
+function shouldRenderCategory(node: FontTreeNode): boolean {
+  return node.type === 'category' && getVisibleChildren(node).length > 0
+}
+
+function isCategoryExpanded(node: FontTreeNode): boolean {
+  return isSearchMode.value ? true : !!node.expanded
+}
 
 function toggleExpand(node: FontTreeNode) {
+  if (isSearchMode.value) {
+    return
+  }
   const next = !node.expanded
   node.expanded = next
   fontStore.setCategoryExpanded(node.name, next)
@@ -39,17 +76,11 @@ function isInPreview(node: FontTreeNode): boolean {
 }
 
 function getCategoryFontIds(node: FontTreeNode): string[] {
-  if (node.type !== 'category' || !node.children) {
-    return []
-  }
-
-  return node.children
-    .filter((child): child is FontTreeNode & { fontInfo: NonNullable<FontTreeNode['fontInfo']> } => child.type === 'font' && !!child.fontInfo)
-    .map(child => child.fontInfo.id)
+  return getVisibleChildren(node).map(child => child.fontInfo.id)
 }
 
 function getCategoryFontCount(node: FontTreeNode): number {
-  return getCategoryFontIds(node).length
+  return getVisibleChildren(node).length
 }
 
 function isCategoryAllInPreview(node: FontTreeNode): boolean {
@@ -77,19 +108,21 @@ function handleCategorySelectAll(node: FontTreeNode, event: Event) {
   <div class="space-y-0">
     <div v-for="node in nodes" :key="node.name">
       <!-- 分类节点 -->
-      <div v-if="node.type === 'category'" class="relative mb-3">
+      <div v-if="shouldRenderCategory(node)" class="relative mb-3">
         <div class="flex items-center gap-2">
           <!-- 左侧展开图标 -->
           <div class="tree-icon-wrapper">
             <button 
               @click="toggleExpand(node)"
               class="tree-toggle"
+              :disabled="isSearchMode"
             >
               <img 
-                v-if="node.expanded" 
+                v-if="isCategoryExpanded(node)" 
                 src="../assets/icons/zhedie.svg" 
                 alt="收起" 
-                class="w-[15px] h-[15px]" 
+                class="w-[15px] h-[15px]"
+                :class="{ 'opacity-70': isSearchMode }"
               />
               <img 
                 v-else 
@@ -103,7 +136,8 @@ function handleCategorySelectAll(node: FontTreeNode, event: Event) {
           <!-- 分类标题 -->
           <div 
             @click="toggleExpand(node)"
-            class="text-base font-medium text-black cursor-pointer flex-1 ml-2"
+            class="text-base font-medium text-black flex-1 ml-2"
+            :class="isSearchMode ? 'cursor-default' : 'cursor-pointer'"
           >
             {{ node.name }}（{{ getCategoryFontCount(node) }}字体）
           </div>
@@ -125,12 +159,12 @@ function handleCategorySelectAll(node: FontTreeNode, event: Event) {
         </div>
         
         <!-- 竖直连接线 -->
-        <div v-if="node.expanded && node.children" class="tree-vertical-line"></div>
+        <div v-if="isCategoryExpanded(node) && getVisibleChildren(node).length > 0" class="tree-vertical-line"></div>
 
         <!-- 字体列表 -->
-        <div v-if="node.expanded && node.children" class="flex flex-col gap-3 mt-3">
+        <div v-if="isCategoryExpanded(node) && getVisibleChildren(node).length > 0" class="flex flex-col gap-3 mt-3">
           <div
-            v-for="child in node.children"
+            v-for="child in getVisibleChildren(node)"
             :key="child.name"
             class="flex items-center gap-2 border-b border-[#c9cdd4] pb-2 relative"
           >