diff --git a/yunkes/src/api/index.ts b/yunkes/src/api/index.ts
index 4c4924c..04d9419 100644
--- a/yunkes/src/api/index.ts
+++ b/yunkes/src/api/index.ts
@@ -40,6 +40,7 @@ export interface CustomerQuery {
   page?: number
   page_size?: number
   owner_account_id?: string
+  friend_id?: string
   user_id?: string
   department_id?: string
   add_time_since?: number
@@ -54,6 +55,7 @@ export function getCustomers(query: CustomerQuery = {}): Promise<Page<Customer>>
       page_size: query.page_size ?? 20,
       channel: query.channel === 'all' ? undefined : query.channel,
       owner_account_id: query.owner_account_id,
+      friend_id: query.friend_id,
       user_id: query.user_id,
       department_id: query.department_id,
       add_time_since: query.add_time_since,
diff --git a/yunkes/src/views/ChatTimeline.vue b/yunkes/src/views/ChatTimeline.vue
index 26d7acf..38474b6 100644
--- a/yunkes/src/views/ChatTimeline.vue
+++ b/yunkes/src/views/ChatTimeline.vue
@@ -3,7 +3,7 @@ import { computed, nextTick, onMounted, ref, watch } from 'vue'
 import { useRoute, useRouter } from 'vue-router'
 import { ElMessage } from 'element-plus'
 import { ArrowLeft } from '@element-plus/icons-vue'
-import { getMessages } from '@/api'
+import { getCustomers, getGroups, getMessages } from '@/api'
 import { downloadBlob } from '@/api/client'
 import type { Channel, Message } from '@/api/types'
 import MessageBubble from '@/components/MessageBubble.vue'
@@ -68,12 +68,42 @@ const visibleMessages = computed(() => {
   return messages.value.filter((m) => (m.text ?? '').includes(k))
 })
 
+/** 当前会话对方的显示名（客户昵称或群名）— fetch 后替换标题中的原始 ID。 */
+const talkerName = ref<string | null>(null)
+
+async function loadTalkerName(): Promise<void> {
+  talkerName.value = null
+  if (!hasActive.value) return
+  try {
+    if (isGroup.value && props.roomId) {
+      // 群名
+      const res = await getGroups({ channel: channelTyped.value, owner_account_id: props.ownerId, page: 1, page_size: 200 })
+      const g = res.items.find(g => g.room_id === props.roomId)
+      talkerName.value = g?.room_name || null
+    } else if (props.talkerId) {
+      // 客户昵称
+      const res = await getCustomers({
+        channel: channelTyped.value,
+        owner_account_id: props.ownerId,
+        friend_id: props.talkerId,
+        page: 1,
+        page_size: 1,
+      })
+      const c = res.items[0]
+      talkerName.value = c?.friend_nickname || c?.friend_remark || null
+    }
+  } catch {
+    // 静默降级：显示原始 ID
+  }
+}
+
 const conversationTitle = computed(() => {
+  const displayName = talkerName.value || (isGroup.value ? props.roomId : props.talkerId)
   if (isGroup.value) {
-    return `群聊记录 · ${props.roomId}`
+    return `群聊记录 · ${displayName}`
   }
   if (props.talkerId) {
-    return `与 ${props.talkerId} 的聊天记录`
+    return `与 ${displayName} 的聊天记录`
   }
   // 账号级入口(无具体会话):仅展示渠道级标题,避免出现 "与 undefined 的聊天记录"。
   return '聊天记录'
@@ -272,10 +302,14 @@ watch(
   () => [props.channel, props.ownerId, props.talkerId, props.roomId] as const,
   () => {
     loadInitial()
+    loadTalkerName()
   },
 )
 
-onMounted(loadInitial)
+onMounted(() => {
+  loadInitial()
+  loadTalkerName()
+})
 </script>
 
 <template>