diff --git a/frontend_nuxt/app.vue b/frontend_nuxt/app.vue
index 8eab548cf..a79f1c6d2 100644
--- a/frontend_nuxt/app.vue
+++ b/frontend_nuxt/app.vue
@@ -22,6 +22,7 @@
     </div>
     <GlobalPopups />
     <ConfirmDialog />
+    <ChatFloating />
   </div>
 </template>
 
@@ -30,6 +31,7 @@ import HeaderComponent from '~/components/HeaderComponent.vue'
 import MenuComponent from '~/components/MenuComponent.vue'
 import GlobalPopups from '~/components/GlobalPopups.vue'
 import ConfirmDialog from '~/components/ConfirmDialog.vue'
+import ChatFloating from '~/components/ChatFloating.vue'
 import { useIsMobile } from '~/utils/screen'
 
 const isMobile = useIsMobile()
diff --git a/frontend_nuxt/components/ChatFloating.vue b/frontend_nuxt/components/ChatFloating.vue
new file mode 100644
index 000000000..d1202bfba
--- /dev/null
+++ b/frontend_nuxt/components/ChatFloating.vue
@@ -0,0 +1,56 @@
+<template>
+  <div v-if="chatFloating" class="chat-floating">
+    <iframe :src="iframeSrc" class="chat-frame"></iframe>
+  </div>
+</template>
+
+<script setup>
+import { computed } from 'vue'
+
+const chatFloating = useState('chatFloating', () => false)
+const chatPath = useState('chatPath', () => '/message-box')
+
+const iframeSrc = computed(() =>
+  chatPath.value.includes('?') ? `${chatPath.value}&float=1` : `${chatPath.value}?float=1`,
+)
+
+if (process.client) {
+  window.addEventListener('message', (event) => {
+    if (event.data?.type === 'maximize-chat') {
+      chatFloating.value = false
+      navigateTo(event.data.path || chatPath.value)
+    }
+  })
+}
+</script>
+
+<style scoped>
+.chat-floating {
+  position: fixed;
+  bottom: 20px;
+  right: 20px;
+  width: 400px;
+  height: 70vh;
+  max-height: 600px;
+  background: var(--background-color);
+  border: 1px solid var(--normal-border-color);
+  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
+  z-index: 2000;
+  display: flex;
+  flex-direction: column;
+}
+
+.chat-frame {
+  width: 100%;
+  height: 100%;
+  border: none;
+}
+
+@media (max-width: 500px) {
+  .chat-floating {
+    right: 0;
+    width: 100%;
+    height: 60vh;
+  }
+}
+</style>
diff --git a/frontend_nuxt/pages/message-box/[id].vue b/frontend_nuxt/pages/message-box/[id].vue
index fee571f53..5f049289e 100644
--- a/frontend_nuxt/pages/message-box/[id].vue
+++ b/frontend_nuxt/pages/message-box/[id].vue
@@ -7,6 +7,10 @@
       <h2 class="participant-name">
         {{ isChannel ? conversationName : otherParticipant?.username }}
       </h2>
+      <div class="chat-controls">
+        <i v-if="!isFloat" class="fas fa-window-minimize control-icon" @click="minimizeChat"></i>
+        <i v-else class="fas fa-expand control-icon" @click="maximizeChat"></i>
+      </div>
     </div>
 
     <div class="messages-list" ref="messagesListEl">
@@ -82,6 +86,10 @@ const { fetchUnreadCount: refreshGlobalUnreadCount } = useUnreadCount()
 const { fetchChannelUnread: refreshChannelUnread } = useChannelsUnreadCount()
 let subscription = null
 
+const chatFloating = useState('chatFloating', () => false)
+const chatPath = useState('chatPath', () => '/message-box')
+const isFloat = computed(() => route.query.float === '1')
+
 const messages = ref([])
 const participants = ref([])
 const loading = ref(true)
@@ -115,6 +123,24 @@ function handleAvatarError(event) {
   event.target.src = '/default-avatar.svg'
 }
 
+function minimizeChat() {
+  chatPath.value = route.fullPath
+  chatFloating.value = true
+  navigateTo('/')
+}
+
+function maximizeChat() {
+  if (window.parent) {
+    window.parent.postMessage(
+      {
+        type: 'maximize-chat',
+        path: route.fullPath.replace('?float=1', '').replace('&float=1', ''),
+      },
+      '*',
+    )
+  }
+}
+
 // No changes needed here, as renderMarkdown is now imported.
 // The old function is removed.
 
@@ -411,6 +437,7 @@ onUnmounted(() => {
   font-size: 18px;
   font-weight: 600;
   margin: 0;
+  flex: 1;
 }
 
 .messages-list {
@@ -524,4 +551,15 @@ onUnmounted(() => {
   margin-left: 10px;
   margin-right: 10px;
 }
+
+.chat-controls {
+  margin-left: auto;
+  cursor: pointer;
+  display: flex;
+  align-items: center;
+}
+
+.control-icon {
+  font-size: 16px;
+}
 </style>
diff --git a/frontend_nuxt/pages/message-box/index.vue b/frontend_nuxt/pages/message-box/index.vue
index d2af0f6af..73abdde2c 100644
--- a/frontend_nuxt/pages/message-box/index.vue
+++ b/frontend_nuxt/pages/message-box/index.vue
@@ -1,5 +1,9 @@
 <template>
   <div class="messages-container">
+    <div class="chat-controls">
+      <i v-if="!isFloat" class="fas fa-window-minimize control-icon" @click="minimizeChat"></i>
+      <i v-else class="fas fa-expand control-icon" @click="maximizeChat"></i>
+    </div>
     <div class="tabs">
       <div :class="['tab', { active: activeTab === 'messages' }]" @click="activeTab = 'messages'">
         站内信
@@ -114,8 +118,8 @@
 </template>
 
 <script setup>
-import { ref, onUnmounted, watch, onActivated } from 'vue'
-import { useRouter } from 'vue-router'
+import { ref, onUnmounted, watch, onActivated, computed } from 'vue'
+import { useRouter, useRoute } from 'vue-router'
 import { getToken, fetchCurrentUser } from '~/utils/auth'
 import { toast } from '~/main'
 import { useWebSocket } from '~/composables/useWebSocket'
@@ -131,6 +135,7 @@ const conversations = ref([])
 const loading = ref(true)
 const error = ref(null)
 const router = useRouter()
+const route = useRoute()
 const currentUser = ref(null)
 const API_BASE_URL = config.public.apiBaseUrl
 const { connect, disconnect, subscribe, isConnected } = useWebSocket()
@@ -139,6 +144,10 @@ const { fetchChannelUnread: refreshChannelUnread, setFromList: setChannelUnreadF
   useChannelsUnreadCount()
 let subscription = null
 
+const chatFloating = useState('chatFloating', () => false)
+const chatPath = useState('chatPath', () => '/message-box')
+const isFloat = computed(() => route.query.float === '1')
+
 const activeTab = ref('messages')
 const channels = ref([])
 const loadingChannels = ref(false)
@@ -229,6 +238,24 @@ async function goToChannel(id) {
   }
 }
 
+function minimizeChat() {
+  chatPath.value = route.fullPath
+  chatFloating.value = true
+  navigateTo('/')
+}
+
+function maximizeChat() {
+  if (window.parent) {
+    window.parent.postMessage(
+      {
+        type: 'maximize-chat',
+        path: route.fullPath.replace('?float=1', '').replace('&float=1', ''),
+      },
+      '*',
+    )
+  }
+}
+
 onActivated(async () => {
   loading.value = true
   currentUser.value = await fetchCurrentUser()
@@ -278,6 +305,7 @@ function goToConversation(id) {
 
 <style scoped>
 .messages-container {
+  position: relative;
 }
 
 .tabs {
@@ -437,6 +465,18 @@ function goToConversation(id) {
   margin-left: 4px;
 }
 
+.chat-controls {
+  position: absolute;
+  top: 10px;
+  right: 10px;
+  cursor: pointer;
+  z-index: 10;
+}
+
+.control-icon {
+  font-size: 16px;
+}
+
 /* 响应式设计 */
 @media (max-width: 768px) {
   .conversation-item {