diff --git a/src/components/FileBrowser.vue b/src/components/FileBrowser.vue
index 4bbec8ba..ff40c551 100644
--- a/src/components/FileBrowser.vue
+++ b/src/components/FileBrowser.vue
@@ -136,6 +136,12 @@ const sort = ref('name')
 // 是否显示目录树
 const showDirTree = ref(false)
 
+// 拖动分隔条相关
+const navigatorWidth = ref(280) // 初始宽度
+const isDragging = ref(false)
+const dragStartX = ref(0)
+const dragStartWidth = ref(0)
+
 // 计算属性
 const storagesArray = computed(() => {
   return props.storages?.map(item => ({
@@ -181,6 +187,58 @@ function fileListUpdated(items: FileItem[]) {
   fileListItems.value = items
 }
 
+// 阻止选择事件
+function preventSelect(event: Event) {
+  event.preventDefault()
+  return false
+}
+
+// 拖动分隔条相关方法
+function startDrag(event: MouseEvent) {
+  event.preventDefault() // 阻止默认行为
+  event.stopPropagation() // 阻止事件冒泡
+
+  isDragging.value = true
+  dragStartX.value = event.clientX
+  dragStartWidth.value = navigatorWidth.value
+
+  document.addEventListener('mousemove', handleDrag, { passive: false })
+  document.addEventListener('mouseup', stopDrag, { passive: false })
+  document.addEventListener('selectstart', preventSelect) // 阻止选择开始
+
+  document.body.style.cursor = 'col-resize'
+  document.body.style.userSelect = 'none'
+  ;(document.body.style as any).webkitUserSelect = 'none' // Safari兼容
+  ;(document.body.style as any).mozUserSelect = 'none' // Firefox兼容
+}
+
+function handleDrag(event: MouseEvent) {
+  if (!isDragging.value) return
+
+  event.preventDefault() // 阻止默认行为
+
+  const deltaX = event.clientX - dragStartX.value
+  const newWidth = dragStartWidth.value + deltaX
+
+  // 设置最小和最大宽度限制
+  const minWidth = 200
+  const maxWidth = window.innerWidth * 0.6
+
+  navigatorWidth.value = Math.max(minWidth, Math.min(maxWidth, newWidth))
+}
+
+function stopDrag() {
+  isDragging.value = false
+  document.removeEventListener('mousemove', handleDrag)
+  document.removeEventListener('mouseup', stopDrag)
+  document.removeEventListener('selectstart', preventSelect)
+
+  document.body.style.cursor = ''
+  document.body.style.userSelect = ''
+  ;(document.body.style as any).webkitUserSelect = ''
+  ;(document.body.style as any).mozUserSelect = ''
+}
+
 // 外层DIV大小控制
 const scrollStyle = computed(() => {
   return appMode
@@ -219,8 +277,14 @@ const fileListStyle = computed(() => {
           :items="fileListItems"
           :endpoints="endpoints"
           :axios="axios"
+          :style="{ width: `${navigatorWidth}px`, minWidth: `${navigatorWidth}px` }"
           @navigate="pathChanged"
         />
+        <!-- 拖动分隔条 -->
+        <div v-if="showDirTree" class="divider" :class="{ 'divider-dragging': isDragging }" @mousedown="startDrag">
+          <div class="divider-line"></div>
+          <VIcon class="divider-icon" size="small">mdi-drag-vertical</VIcon>
+        </div>
         <FileList
           :item="item"
           :storage="activeStorage"
@@ -231,6 +295,7 @@ const fileListStyle = computed(() => {
           :sort="sort"
           :listStyle="fileListStyle"
           :showTree="showDirTree"
+          :style="{ flex: 1 }"
           @pathchanged="pathChanged"
           @loading="loadingChanged"
           @refreshed="refreshPending = false"
@@ -243,3 +308,64 @@ const fileListStyle = computed(() => {
     </div>
   </div>
 </template>
+
+<style scoped>
+.divider {
+  position: relative;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  background-color: transparent;
+  cursor: col-resize;
+  inline-size: 4px;
+  transition: background-color 0.2s ease;
+  user-select: none;
+}
+
+.divider:hover {
+  background-color: rgba(var(--v-theme-on-surface), 0.08);
+}
+
+.divider-dragging {
+  background-color: rgba(var(--v-theme-primary), 0.12) !important;
+}
+
+.divider-line {
+  background-color: rgba(var(--v-theme-outline), 0.3);
+  block-size: 100%;
+  inline-size: 1px;
+  transition: background-color 0.2s ease;
+  user-select: none;
+}
+
+.divider-dragging .divider-line {
+  background-color: rgb(var(--v-theme-primary)) !important;
+}
+
+.divider:hover .divider-line {
+  background-color: rgba(var(--v-theme-primary), 0.8);
+}
+
+.divider-icon {
+  position: absolute;
+  z-index: 1;
+  padding: 2px;
+  border-radius: 2px;
+  background-color: rgba(var(--v-theme-surface), 0.9);
+  color: rgba(var(--v-theme-on-surface-variant), 0.6);
+  opacity: 0;
+  pointer-events: none;
+  transition: all 0.2s ease;
+}
+
+.divider-dragging .divider-icon {
+  background-color: rgba(var(--v-theme-surface), 0.95);
+  color: rgb(var(--v-theme-primary));
+  opacity: 1;
+}
+
+.divider:hover .divider-icon {
+  color: rgba(var(--v-theme-primary), 0.9);
+  opacity: 1;
+}
+</style>