diff --git a/app/services/param_store.py b/app/services/param_store.py
index 42f7bdc..f4fa522 100644
--- a/app/services/param_store.py
+++ b/app/services/param_store.py
@@ -47,6 +47,11 @@ RUNTIME_EXTRA = {
     # (它只回 ok=False 不抛异常, 调用点又把返回值丢了)。后果是 prev_ymd 永远读回 0,
     # 「连续 N 日」的按日推进彻底失效, 修复形同虚设。加表时**必须同步加这里**。
     "PMS_RECON_STREAK_YMD": (0, int, "上次推进连续天数的交易日 YYYYMMDD (同日不重复计数)"),
+    # 2026-08-14: 上游信号告警面板的三个显示参数。原来只在 upstream_signals.py 里用 get_int
+    # 兜底、没登记, 所以设置页调不到、改一次得重新部署。注册进来后可在页面实时调 (即时生效)。
+    "PMS_UPSTREAM_ALERT_SCAN": (300, int, "告警扫描窗: 每轮从告警流取最近 N 条再分类限量 (窗要大于各类上限之和, 防 price_notice 等高频源把风控告警挤出最新N)"),
+    "PMS_UPSTREAM_ALERT_PER_CAT": (20, int, "告警每类上限: 同一类型最多显示最新 N 条 (砍单类刷屏, 不挤别的类)"),
+    "PMS_UPSTREAM_ALERT_MAX_AGE_MIN": (60, int, "告警时间窗(分钟): 超过此龄判为陈旧并在页面置灰标注(不删除, 风控不丢信息), 0=不限龄。与每类上限正交, 先按龄标记再每类限量"),
 }
 
 # **读不到时必须按"已暂停"处理的键 (fail-closed)。**
@@ -316,6 +321,8 @@ _RANGES = {
     "PMS_OPEN_REF_DRIFT_MAX": (0, 0.5), "PMS_JUDGE_TICK_BUDGET_SEC": (0, 240),
     #   上限 240 = scheduler 给调度任务设的软超时。填得比它还大, 预算就形同虚设,
     #   任务会先被 celery 打死 (而且是在已经落了一部分表之后)。
+    "PMS_UPSTREAM_ALERT_SCAN": (1, 20000), "PMS_UPSTREAM_ALERT_PER_CAT": (1, 1000),
+    "PMS_UPSTREAM_ALERT_MAX_AGE_MIN": (0, 1440),   # 0=不限龄, 上限 24 小时
 }
 
 
diff --git a/app/services/upstream_signals.py b/app/services/upstream_signals.py
index 8f56a25..ab19f82 100644
--- a/app/services/upstream_signals.py
+++ b/app/services/upstream_signals.py
@@ -46,6 +46,12 @@ def _alert_per_cat() -> int:
     return max(1, param_store.get_int("PMS_UPSTREAM_ALERT_PER_CAT", 20))
 
 
+def _alert_max_age_sec() -> int:
+    # 告警时间窗(秒): 0=不限龄。只用于给每条打"陈旧"标记(超龄置灰), **不删条目** ——
+    # 用户拍板"置灰标注"而非隐藏, 风控面板不丢信息。与每类上限正交: 先按龄标 stale, 再每类限量。
+    return max(0, param_store.get_int("PMS_UPSTREAM_ALERT_MAX_AGE_MIN", 60)) * 60
+
+
 def _c208(db: int):
     """208(与 SIGNAL_REDIS 同实例)的只读客户端, 按库缓存。"""
     key = ("208", db)
@@ -138,6 +144,8 @@ _ALERT_META = {
 def _read_alerts(c, ymd):
     key = "intraday_alerts:%s" % ymd
     per_cat = _alert_per_cat()
+    max_age = _alert_max_age_sec()   # 秒; 0=不限龄。超龄不删, 只标 stale 供页面置灰。
+    now = time.time()
     counts = {}          # cat -> 已收数量; 每类只留最新 per_cat 条(仍按 newest-first)
     out = []
     for _id, f in c.xrevrange(key, count=_alert_scan()):
@@ -157,10 +165,19 @@ def _read_alerts(c, ymd):
             d = "看跌" if mdir in ("down", "short", "bear") else ("看涨" if mdir in ("up", "long", "bull") else "—")
         else:
             d = dir_fixed
+        # 分钟龄 + 陈旧标记: 时间窗只做"置灰标注", 不删条目(超龄由页面按 stale 置灰)。
+        # trigger_time 是 epoch 毫秒; 缺失/非法 → age_min=None 且不判陈旧(风控从宽, 不误灰)。
+        try:
+            age_sec = now - float(f.get("trigger_time")) / 1000.0
+            age_min = int(age_sec // 60)
+        except (TypeError, ValueError):
+            age_sec, age_min = None, None
+        stale = bool(max_age) and age_sec is not None and age_sec > max_age
         counts[cat] = counts.get(cat, 0) + 1
         out.append({"ts_code": f.get("ts_code"), "source": src, "direction": d,
                     "cat": cat, "cat_label": cat_label,
-                    "level": f.get("level"), "value": _num(f.get("value")), "time": _hm(f.get("trigger_time"))})
+                    "level": f.get("level"), "value": _num(f.get("value")),
+                    "time": _hm(f.get("trigger_time")), "age_min": age_min, "stale": stale})
     return {"key": key, "items": out}
 
 
diff --git a/app/web/static/index.html b/app/web/static/index.html
index c948636..4508765 100644
--- a/app/web/static/index.html
+++ b/app/web/static/index.html
@@ -134,6 +134,11 @@ pre.json{background:var(--surface-2);border:1px solid var(--hair);border-radius:
 .alert-win .aw-title{font-size:13px;font-weight:640;color:var(--ink-2);}
 .alert-win .aw-toggle{font-size:11px;font-weight:560;color:var(--accent);cursor:pointer;border:1px solid var(--accent);border-radius:999px;padding:1px 9px;background:var(--accent-weak);white-space:nowrap;}
 .alert-win .aw-toggle.off{color:var(--muted);border-color:var(--hair);background:var(--surface-2);}
+/* 陈旧告警置灰 (超龄不隐藏, 只灰: 风控面板不丢信息)。灰=陈旧, 不动红绿(红绿只留给方向)。 */
+.alert-bar .ab-stale{flex:none;font-size:11px;color:var(--muted);border:1px solid var(--hair);border-radius:999px;padding:0 7px;}
+.alert-win .el-table__row.alert-stale{opacity:.5;}
+.alert-win .el-table__row.alert-stale:hover{opacity:.72;}
+.alert-age{color:var(--muted);font-size:10.5px;margin-left:5px;}
 </style>
 </head>
 <body>
@@ -196,7 +201,8 @@ pre.json{background:var(--surface-2);border:1px solid var(--hair);border-radius:
           <span v-if="alertLatest.direction && alertLatest.direction!=='—'" :class="['看涨','涨'].includes(alertLatest.direction)?'clr-up':'clr-down'">{{ alertLatest.direction }}</span>
           <span class="muted">{{ alertLatest.cat_label }}</span>
           <span class="disp" :class="alertLatest.level==='DANGER'?'deny':(alertLatest.level==='WARNING'?'queue':'wait')" style="padding:1px 7px">{{ alertLatest.level }}</span>
-          <span class="muted">{{ alertLatest.time }}</span>
+          <span class="muted">{{ alertLatest.time }}<template v-if="ageText(alertLatest)"> · {{ ageText(alertLatest) }}</template></span>
+          <span v-if="alertLatest.stale" class="ab-stale" title="超过告警时间窗, 已置灰标注为陈旧">陈旧</span>
         </span>
         <span class="ab-latest muted" v-else>· 折叠条已隐藏当前类型（展开后可切回）</span>
         <button class="ab-toggle" @click="showAlerts=!showAlerts">{{ showAlerts?'收起 ▲':'展开全部 ▼' }}</button>
@@ -215,12 +221,12 @@ pre.json{background:var(--surface-2);border:1px solid var(--hair);border-radius:
           <span class="aw-title">{{ g.label }} <span class="muted" style="font-weight:400">· {{ g.items.length }}</span></span>
           <span class="aw-toggle" :class="{off:!catShown(g.key)}" @click="toggleCat(g.key)" :title="catShown(g.key)?'点此不在顶部折叠条里显示这类':'点此让这类回到顶部折叠条'">{{ catShown(g.key) ? '折叠条显示 ✓' : '折叠条隐藏' }}</span>
         </div>
-        <el-table :data="g.items.slice(0,20)" size="small" max-height="240" empty-text="暂无">
+        <el-table :data="g.items.slice(0,20)" size="small" max-height="240" empty-text="暂无" :row-class-name="alertRowClass">
           <el-table-column label="股票" min-width="140"><template #default="s"><b>{{ nm(s.row.ts_code) }}</b> <span class="muted mono">{{ s.row.ts_code }}</span></template></el-table-column>
           <el-table-column label="方向" width="58"><template #default="s"><span v-if="s.row.direction && s.row.direction!=='—'" :class="['看涨','涨'].includes(s.row.direction)?'clr-up':'clr-down'">{{ s.row.direction }}</span><span v-else class="muted">—</span></template></el-table-column>
           <el-table-column label="级别" width="86"><template #default="s"><span class="disp" :class="s.row.level==='DANGER'?'deny':(s.row.level==='WARNING'?'queue':'wait')">{{ s.row.level }}</span></template></el-table-column>
           <el-table-column label="来源" min-width="150"><template #default="s"><span class="muted" style="font-size:11px">{{ s.row.source }}</span></template></el-table-column>
-          <el-table-column label="时间" width="56" align="right"><template #default="s"><span class="mono muted">{{ s.row.time }}</span></template></el-table-column>
+          <el-table-column label="时间" width="120" align="right"><template #default="s"><span class="mono muted">{{ s.row.time }}</span><span v-if="ageText(s.row)" class="alert-age">{{ ageText(s.row) }}</span></template></el-table-column>
         </el-table>
       </div>
     </div>
@@ -1845,6 +1851,17 @@ createApp({
       if (it.some(x => x.level === 'WARNING')) return 'warn';
       return 'none';
     });
+    // 告警分钟龄文案 + 陈旧行置灰。龄由后端按 trigger_time 算好放 age_min;
+    // stale=超过时间窗 PMS_UPSTREAM_ALERT_MAX_AGE_MIN (置灰不隐藏, 风控面板不丢信息)。
+    function ageText(row){
+      const a = row && row.age_min;
+      if (a === null || a === undefined) return '';
+      if (a <= 0) return '刚刚';
+      if (a < 60) return a + '分钟前';
+      const h = Math.floor(a / 60), m = a % 60;
+      return m ? (h + '小时' + m + '分前') : (h + '小时前');
+    }
+    const alertRowClass = ({ row }) => (row && row.stale) ? 'alert-stale' : '';
     async function loadUpstream() {
       const d = await call('get', '/api/upstream-signals');
       upstream.value = (d && d.sources) ? d : { sources: {} };
@@ -2121,7 +2138,7 @@ createApp({
       showOpLog, showSettings, watchCandidates, marketOpen, marketState, lastRefresh, autoRefresh,
       upstream, showUpstream, usrc, loadUpstream,
       showAlerts, alertItems, alertLatest, alertLevelClass, alertGroups, alertStripItems,
-      alertStripCount, alertTotalCount, catShown, toggleCat };
+      alertStripCount, alertTotalCount, catShown, toggleCat, ageText, alertRowClass };
   }
 }).use(ElementPlus).mount('#app');
 </script>