diff --git a/frontend_nuxt/app.vue b/frontend_nuxt/app.vue
index a79f1c6d2..8eab548cf 100644
--- a/frontend_nuxt/app.vue
+++ b/frontend_nuxt/app.vue
@@ -22,7 +22,6 @@
     </div>
     <GlobalPopups />
     <ConfirmDialog />
-    <ChatFloating />
   </div>
 </template>
 
@@ -31,7 +30,6 @@ 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
deleted file mode 100644
index d1202bfba..000000000
--- a/frontend_nuxt/components/ChatFloating.vue
+++ /dev/null
@@ -1,56 +0,0 @@
-<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 5f049289e..fee571f53 100644
--- a/frontend_nuxt/pages/message-box/[id].vue
+++ b/frontend_nuxt/pages/message-box/[id].vue
@@ -7,10 +7,6 @@
       <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">
@@ -86,10 +82,6 @@ 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)
@@ -123,24 +115,6 @@ 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.
 
@@ -437,7 +411,6 @@ onUnmounted(() => {
   font-size: 18px;
   font-weight: 600;
   margin: 0;
-  flex: 1;
 }
 
 .messages-list {
@@ -551,15 +524,4 @@ 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 0f95ffa73..17f14587c 100644
--- a/frontend_nuxt/pages/message-box/index.vue
+++ b/frontend_nuxt/pages/message-box/index.vue
@@ -1,9 +1,5 @@
 <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
@@ -118,8 +114,8 @@
 </template>
 
 <script setup>
-import { ref, onUnmounted, watch, onActivated, computed } from 'vue'
 import { useRoute } from 'vue-router'
+import { ref, onUnmounted, watch, onActivated } from 'vue'
 import { getToken, fetchCurrentUser } from '~/utils/auth'
 import { toast } from '~/main'
 import { useWebSocket } from '~/composables/useWebSocket'
@@ -144,10 +140,6 @@ 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)
@@ -238,24 +230,6 @@ 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()
@@ -305,7 +279,6 @@ function goToConversation(id) {
 
 <style scoped>
 .messages-container {
-  position: relative;
 }
 
 .tabs {
@@ -465,18 +438,6 @@ 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 {