diff --git a/src/views/im/home/components/UserAvatar.vue b/src/views/im/home/components/UserAvatar.vue
index 90465373d..77f750956 100644
--- a/src/views/im/home/components/UserAvatar.vue
+++ b/src/views/im/home/components/UserAvatar.vue
@@ -17,6 +17,7 @@
       :src="url"
       :preview-src-list="[url]"
       :preview-teleported="true"
+      :z-index="previewZIndex"
       :style="imgStyle"
       fit="cover"
     />
@@ -57,13 +58,15 @@ const props = withDefaults(
     radius?: string // 圆角，支持 CSS 长度；默认 15% 方块小圆角（参考微信）
     clickable?: boolean // 是否点击弹出 UserInfoCard；默认 true
     previewable?: boolean // 是否点头像直接放大预览；开启后忽略 clickable，不再弹名片
+    previewZIndex?: number // 预览层 z-index；放在高 z-index 弹层（如 UserInfoCard）里时需手动抬高
     user?: UserInfo // 额外的用户信息，传了点击就不用现拉接口（弹名片用）
   }>(),
   {
     size: 42,
     radius: '15%',
     clickable: true,
-    previewable: false
+    previewable: false,
+    previewZIndex: 2000
   }
 )
 
diff --git a/src/views/im/home/components/UserInfoCard.vue b/src/views/im/home/components/UserInfoCard.vue
new file mode 100644
index 000000000..2aa71762e
--- /dev/null
+++ b/src/views/im/home/components/UserInfoCard.vue
@@ -0,0 +1,174 @@
+<template>
+  <!--
+    用户名片
+    由 Index.vue 挂载，通过 useImUiStore.openUserInfoCard(user, position) 触发点遮罩 / 按 Esc 关闭
+  -->
+  <teleport to="body">
+    <div v-if="card.show" class="fixed inset-0 z-9998" @click.self="handleClose">
+      <div
+        class="fixed w-80 p-4 bg-[var(--el-bg-color-overlay)] rounded-md shadow-xl"
+        :style="{ left: card.position.x + 'px', top: card.position.y + 'px' }"
+        @click.stop
+      >
+        <div class="flex items-center gap-3">
+          <UserAvatar
+            :url="user?.avatar"
+            :name="user?.nickname"
+            :size="60"
+            :clickable="false"
+            previewable
+            :preview-z-index="10000"
+          />
+          <div class="flex-1 min-w-0">
+            <div class="text-16px font-semibold text-[var(--el-text-color-primary)]">
+              {{ user?.nickname || '-' }}
+            </div>
+            <div class="mt-1 text-13px break-all text-[var(--el-text-color-regular)]">
+              <span class="text-[var(--el-text-color-secondary)]">部门：</span>
+              <span>{{ user?.deptName || '-' }}</span>
+            </div>
+            <div class="mt-1 text-13px break-all text-[var(--el-text-color-regular)]">
+              <span class="text-[var(--el-text-color-secondary)]">性别：</span>
+              <span>{{ sexLabel }}</span>
+            </div>
+          </div>
+        </div>
+
+        <el-divider class="!my-3.5" />
+
+        <div class="flex gap-2 justify-center">
+          <el-button v-if="isSelf" type="primary" disabled>不能和自己聊天</el-button>
+          <el-button v-else-if="isFriend" type="primary" @click="handleSendMessage"
+            >发消息</el-button
+          >
+          <el-button v-else type="primary" @click="handleAddFriend">加为好友</el-button>
+        </div>
+      </div>
+    </div>
+  </teleport>
+</template>
+
+<script lang="ts" setup>
+import { computed, onMounted, onUnmounted, watch } from 'vue'
+import { useRouter } from 'vue-router'
+import { ElMessage } from 'element-plus'
+
+import { DICT_TYPE, getDictLabel } from '@/utils/dict'
+import { getSimpleUser } from '@/api/system/user'
+import { useUserStore } from '@/store/modules/user'
+import { useImUiStore } from '../store/uiStore'
+import { useConversationStore } from '../store/conversationStore'
+import { useFriendStore } from '../store/friendStore'
+import { ImConversationType } from '../../utils/constants'
+import type { UserInfo } from '../types'
+import UserAvatar from './UserAvatar.vue'
+
+defineOptions({ name: 'ImUserInfoCard' })
+
+const uiStore = useImUiStore()
+const conversationStore = useConversationStore()
+const friendStore = useFriendStore()
+const userStore = useUserStore()
+const router = useRouter()
+
+const card = computed(() => uiStore.userInfoCard)
+const user = computed(() => card.value.user)
+
+const sexLabel = computed(() => {
+  if (user.value?.sex == null) {
+    return '-'
+  }
+  return getDictLabel(DICT_TYPE.SYSTEM_USER_SEX, user.value.sex) || '-'
+})
+
+const isSelf = computed(() => {
+  const myId = Number(userStore.getUser?.id) || 0
+  return !!user.value?.id && user.value.id === myId
+})
+
+const isFriend = computed(() => {
+  if (!user.value?.id || isSelf.value) {
+    return false
+  }
+  return friendStore.isFriend(user.value.id)
+})
+
+/** 名片打开时拉一次完整信息（部门 / 性别），覆盖调用方传入的最小集 */
+watch(
+  () => card.value.show,
+  async (show) => {
+    if (!show) {
+      return
+    }
+    const id = user.value?.id
+    if (!id) {
+      return
+    }
+    try {
+      const data = (await getSimpleUser(id)) as UserInfo
+      // 二次校验：用户切换或卡片已关闭则丢弃响应
+      if (data && card.value.show && card.value.user?.id === id) {
+        Object.assign(card.value.user, data)
+      }
+    } catch (e) {
+      console.warn('[IM] 拉取用户名片信息失败', e)
+    }
+  }
+)
+
+/** 关闭名片：点击遮罩或按 Esc 都会触发，直接调用 uiStore 关掉就行 */
+function handleClose() {
+  uiStore.closeUserInfoCard()
+}
+
+function handleKeydown(e: KeyboardEvent) {
+  if (e.key === 'Escape' && card.value.show) {
+    handleClose()
+  }
+}
+
+onMounted(() => window.addEventListener('keydown', handleKeydown))
+onUnmounted(() => window.removeEventListener('keydown', handleKeydown))
+
+/** 发消息：打开私聊会话，跳转到聊天 tab */
+function handleSendMessage() {
+  if (!user.value) {
+    return
+  }
+  // 同步 friendStore 里的 muted，避免新建的私聊会话丢失"消息免打扰"状态（与 FriendPage.onChat 行为一致）
+  const friendEntry = friendStore.getFriend(user.value.id)
+  conversationStore.openConversation(
+    user.value.id,
+    ImConversationType.PRIVATE,
+    user.value.nickname || '',
+    user.value.avatar || '',
+    { muted: !!friendEntry?.muted }
+  )
+  // 跳转到聊天 tab（如果已经在了就算了）
+  if (router.currentRoute.value.name !== 'ImHomeConversation') {
+    router.push({ name: 'ImHomeConversation' })
+  }
+  uiStore.closeUserInfoCard()
+}
+
+/** 加为好友：直接加，成功后名片会自动切换到「发消息」按钮 */
+async function handleAddFriend() {
+  if (!user.value?.id) {
+    return
+  }
+  try {
+    await friendStore.addFriend(user.value.id, {
+      nickname: user.value.nickname,
+      avatar: user.value.avatar
+    })
+    ElMessage.success('已添加好友')
+  } catch (e: any) {
+    console.error(
+      '[IM] 添加好友失败',
+      { userId: user.value?.id, nickname: user.value?.nickname },
+      e
+    )
+    ElMessage.error(e?.message || '添加好友失败')
+  }
+}
+</script>