diff --git a/fam-ui/src/app.py b/fam-ui/src/app.py
index c8567e6..a5ba6ac 100644
--- a/fam-ui/src/app.py
+++ b/fam-ui/src/app.py
@@ -810,7 +810,31 @@ elif page == "👤 人物管理":
         f'<span style="color:#64748b;">（与事件时间轴"出现人物"统计一致）</span></div>',
         unsafe_allow_html=True)
 
+    _meta_cache = {}
+
+    def _load_meta(event_id):
+        """读 event 的 meta.json（frame_index -> face_count），缺失返回空 dict"""
+        if event_id not in _meta_cache:
+            mpath = os.path.join(FRAME_DIR, f'event_{event_id}', 'meta.json')
+            try:
+                with open(mpath) as f:
+                    _meta_cache[event_id] = json.load(f) or {}
+            except (OSError, ValueError):
+                _meta_cache[event_id] = {}
+        return _meta_cache[event_id]
+
     def person_photo(frames):
+        """头像优先挑有人脸的帧（face_count 最大），其次按时间序第一张"""
+        best, best_faces = None, -1
+        for eid, fidx, _ in frames:
+            meta = _load_meta(eid)
+            faces = int(meta.get(str(fidx), 0) or 0)
+            if faces > best_faces:
+                b64 = load_frame_b64(eid, fidx)
+                if b64:
+                    best, best_faces = b64, faces
+        if best:
+            return best
         for eid, fidx, _ in frames:
             b64 = load_frame_b64(eid, fidx)
             if b64:
@@ -835,6 +859,25 @@ elif page == "👤 人物管理":
         except Exception as e:
             st.error(f"异常: {e}")
 
+    def do_merge(src_key, tgt_key):
+        """把 src 并入 tgt（判断是同一人时）"""
+        try:
+            resp = requests.post(
+                f"{_core_url}/api/member/merge",
+                json={"source": src_key, "target": tgt_key},
+                timeout=15)
+            if resp.status_code == 200:
+                result = resp.json()
+                st.success(
+                    f"已合并：{src_key} → {result.get('target', tgt_key)}，"
+                    f"明细 {result.get('updated_event_details_count', 0)} 条 / "
+                    f"事件 {result.get('updated_monitor_events_count', 0)} 条")
+                st.rerun()
+            else:
+                st.error(f"合并失败: {resp.status_code} {resp.text[:150]}")
+        except Exception as e:
+            st.error(f"合并异常: {e}")
+
     if not person_frames:
         st.markdown(
             '<div class="fam-empty"><span class="fe-ico">👤</span>'
@@ -892,6 +935,16 @@ elif page == "👤 人物管理":
                         do_name(label, new_name.strip())
                     else:
                         st.warning("请输入名字")
+                merge_targets = [k for k in person_frames if k != key]
+                if merge_targets:
+                    merge_to = st.selectbox(
+                        "合并到", options=[""] + merge_targets,
+                        key=f"mg_{label}", label_visibility="collapsed",
+                        placeholder="合并到其他人物…")
+                    if merge_to:
+                        if st.button("合并", key=f"mbtn_{label}",
+                                     use_container_width=True):
+                            do_merge(key, merge_to)
             st.markdown('<div style="height:10px"></div>', unsafe_allow_html=True)