diff --git a/src/cpns/ClipItemList.vue b/src/cpns/ClipItemList.vue
index 457081d..bfdf778 100644
--- a/src/cpns/ClipItemList.vue
+++ b/src/cpns/ClipItemList.vue
@@ -80,9 +80,18 @@ const props = defineProps({
   currentActiveTab: {
     type: String,
     required: true
+  },
+  isSearchPanelExpand: {
+    type: Boolean,
+    required: true
   }
 })
-const emit = defineEmits(['onDataChange', 'onDataRemove', 'onSelectItemAdd', 'onMultiCopyExecute'])
+const emit = defineEmits([
+  'onDataChange',
+  'onDataRemove',
+  'onMultiCopyExecute',
+  'toggleMultiSelect'
+])
 const isOverSizedContent = (item) => {
   const { type, data } = item
   if (type === 'text') {
@@ -159,8 +168,6 @@ const handleItemClick = (ev, item) => {
         selectItemList.value.push(item) // 添加到已选列表中
       }
     }
-
-    emit('onSelectItemAdd')
   } else {
     const { button } = ev
     if (button === 0) {
@@ -194,25 +201,23 @@ onMounted(() => {
     const isCopy = (ctrlKey || metaKey) && (key === 'C' || key === 'c')
     const isNumber = parseInt(key) <= 9 && parseInt(key) >= 0
     const isShift = key === 'Shift'
+    const isSpace = key === ' '
+    const activeNode = !props.isMultiple
+      ? document.querySelector('.clip-item.active' + (isArrowDown ? '+.clip-item' : ''))
+      : document.querySelector('.clip-item.multi-active' + (isArrowDown ? '+.clip-item' : ''))
     if (isArrowUp) {
+      if (activeIndex.value === 1) window.toTop()
       if (activeIndex.value > 0) {
         activeIndex.value--
-        const activeNode = document.querySelector('.clip-item.active')
-        if (activeIndex.value === 1) {
-          window.toTop()
-        } else {
-          activeNode?.previousElementSibling?.previousElementSibling?.scrollIntoView({
-            block: 'nearest',
-            inline: 'nearest'
-          })
-        }
+        activeNode.previousElementSibling.previousElementSibling.scrollIntoView({
+          block: 'nearest',
+          inline: 'nearest'
+        })
       }
     } else if (isArrowDown) {
       if (activeIndex.value < props.showList.length - 1) {
         activeIndex.value++
-        document
-          .querySelector('.clip-item.active+.clip-item')
-          ?.scrollIntoView({ block: 'nearest', inline: 'nearest' })
+        activeNode.scrollIntoView({ block: 'nearest', inline: 'nearest' })
       }
     } else if (isCopy) {
       if (!props.fullData.data) {
@@ -246,6 +251,25 @@ onMounted(() => {
       if (props.isMultiple) {
         isShiftDown.value = true
       }
+    } else if (isSpace) {
+      if (props.isSearchPanelExpand) {
+        // 搜索栏展开状态 不进入多选
+        return
+      }
+      if (!props.isMultiple) {
+        emit('toggleMultiSelect') // 如果不是多选状态 则切换到多选状态
+      }
+      e.preventDefault()
+      const i = selectItemList.value.findIndex((item) => item === props.showList[activeIndex.value])
+      if (i !== -1) {
+        selectItemList.value.splice(i, 1) // 如果已选中 则取消选中
+      } else {
+        selectItemList.value.push(props.showList[activeIndex.value]) // 如果未选中 则选中
+        activeIndex.value++
+        document
+          .querySelector('.clip-item.multi-active+.clip-item')
+          .scrollIntoView({ block: 'nearest', inline: 'nearest' })
+      }
     }
   })
   document.addEventListener('keyup', (e) => {
diff --git a/src/views/Main.vue b/src/views/Main.vue
index 4600acd..4021a85 100644
--- a/src/views/Main.vue
+++ b/src/views/Main.vue
@@ -47,7 +47,9 @@
       :fullData="fullData"
       :isMultiple="isMultiple"
       :currentActiveTab="activeTab"
+      :isSearchPanelExpand="isSearchPanelExpand"
       @onMultiCopyExecute="handleMultiCopyBtnClick"
+      @toggleMultiSelect="() => (isMultiple = true)"
       @onDataChange="toggleFullData"
       @onDataRemove="handleDataRemove"
     >
@@ -291,6 +293,7 @@ onMounted(() => {
     const isEnter = key === 'Enter'
     const isShift = key === 'Shift'
     const isAlt = key === 'Alt'
+    const isSpace = key === ' '
     if (isTab) {
       const tabTypes = tabs.map((item) => item.type)
       const index = tabTypes.indexOf(activeTab.value)
@@ -312,6 +315,7 @@ onMounted(() => {
       } else if (isMultiple.value) {
         // 退出多选状态
         isMultiple.value = !isMultiple.value
+        e.stopPropagation()
       } else {
         // 无上述情况 执行默认: 隐藏uTools主窗口
       }
@@ -327,6 +331,8 @@ onMounted(() => {
     } else if (ctrlKey || metaKey || isAlt) {
       // Ctrl: utools模拟执行粘贴时触发
       // Alt:
+    } else if (isSpace) {
+      // 空格向下多选
     } else {
       window.focus() // 其他键盘事件 直接聚焦搜索框
     }