diff --git a/crypto_monitor_okx/app.py b/crypto_monitor_okx/app.py
index 1cf9f98..0e43966 100644
--- a/crypto_monitor_okx/app.py
+++ b/crypto_monitor_okx/app.py
@@ -268,7 +268,9 @@ ACCOUNT_BALANCE_CACHE = {
 }
 LIQUIDITY_RANK_CACHE = {
     "updated_at": 0.0,
+    "version": 0,
     "ranks": {},
+    "volumes": {},
     "total": 0,
 }
 
@@ -3165,13 +3167,36 @@ def _status_by_ema55(symbol, timeframe):
         return "横盘", None, None
 
 
-def _daily_volume_rank(symbol):
+def _okx_usdt_swap_volume_by_base() -> dict[str, float]:
     """
-    返回(symbol_rank, total_count)：OKX USDT 永续 24h 成交额(USDT) 在全市场币种中的排名（非「本月」）。
-    同一 base 多合约取成交额最大的一条；不用 vol24h（张数）参与排序。
+    与 OKX 网页「24小时成交额」一致：走官方 /market/tickers?instType=SWAP 的 volCcy24h（USDT）。
+    ccxt 的 quoteVolume 在 OKX 上常不可靠，会导致 ZEC 等币种排名严重偏低。
     """
-    sym_norm = normalize_symbol_input(symbol)
-    target_base = journal_coin_from_symbol(sym_norm)
+    by_base: dict[str, float] = {}
+    try:
+        ensure_markets_loaded()
+        if hasattr(exchange, "publicGetMarketTickers"):
+            resp = exchange.publicGetMarketTickers({"instType": "SWAP"})
+            rows = (resp or {}).get("data") or []
+            for row in rows:
+                if not isinstance(row, dict):
+                    continue
+                inst = str(row.get("instId") or "").upper()
+                # 仅 USDT 本位永续：BTC-USDT-SWAP
+                parts = inst.split("-")
+                if len(parts) < 3 or parts[-1] != "SWAP" or parts[1] != "USDT":
+                    continue
+                base = parts[0].strip()
+                if not base:
+                    continue
+                qv = _safe_float(row.get("volCcy24h"))
+                if qv is None or qv <= 0:
+                    continue
+                by_base[base] = max(by_base.get(base, 0), float(qv))
+            if by_base:
+                return by_base
+    except Exception:
+        pass
 
     def _ticker_base(sym_text):
         s = str(sym_text or "").upper().strip()
@@ -3184,57 +3209,69 @@ def _daily_volume_rank(symbol):
         if s.endswith("USDT"):
             return s[:-4].strip()
         return s
+
+    try:
+        ensure_markets_loaded()
+        try:
+            tickers = exchange.fetch_tickers(params={"instType": "SWAP"})
+        except Exception:
+            tickers = exchange.fetch_tickers()
+        for s, t in (tickers or {}).items():
+            try:
+                mk = exchange.markets.get(s) if exchange.markets else None
+                if mk is not None:
+                    if not mk.get("swap"):
+                        continue
+                    if str(mk.get("quote") or "").upper() != "USDT":
+                        continue
+                    if mk.get("linear") is False:
+                        continue
+                    if mk.get("active") is False:
+                        continue
+                else:
+                    su = str(s).upper()
+                    if "USDT" not in su or ":USDT" not in su:
+                        continue
+                base = _ticker_base(s)
+                if not base:
+                    continue
+                info = (t or {}).get("info") if isinstance((t or {}).get("info"), dict) else {}
+                qv = _safe_float(info.get("volCcy24h"))
+                if qv is None:
+                    qv = _safe_float((t or {}).get("quoteVolume"))
+                if qv is None or qv <= 0:
+                    continue
+                by_base[base] = max(by_base.get(base, 0), float(qv))
+            except Exception:
+                continue
+    except Exception:
+        pass
+    return by_base
+
+
+def _daily_volume_rank(symbol):
+    """
+    返回(symbol_rank, total_count)：OKX USDT 永续 24h 成交额(USDT) 在全市场币种中的排名（非「本月」）。
+    数据与 OKX App「24小时成交额」同源字段 volCcy24h。
+    """
+    sym_norm = normalize_symbol_input(symbol)
+    target_base = journal_coin_from_symbol(sym_norm)
     now_ts = time.time()
+    cache_ver = 3
     cached_ok = (
-        LIQUIDITY_RANK_CACHE["updated_at"]
+        LIQUIDITY_RANK_CACHE.get("version") == cache_ver
+        and LIQUIDITY_RANK_CACHE["updated_at"]
         and now_ts - float(LIQUIDITY_RANK_CACHE["updated_at"]) < max(30, BALANCE_REFRESH_SECONDS)
     )
     if not cached_ok:
         try:
-            ensure_markets_loaded()
-            try:
-                tickers = exchange.fetch_tickers(params={"instType": "SWAP"})
-            except Exception:
-                tickers = exchange.fetch_tickers()
-            by_base: dict[str, float] = {}
-            for s, t in (tickers or {}).items():
-                try:
-                    mk = exchange.markets.get(s) if exchange.markets else None
-                    if mk is not None:
-                        if not mk.get("swap"):
-                            continue
-                        if str(mk.get("quote") or "").upper() != "USDT":
-                            continue
-                        if mk.get("active") is False:
-                            continue
-                    else:
-                        su = str(s).upper()
-                        if "USDT" not in su or ":USDT" not in su:
-                            continue
-                    base = _ticker_base(s)
-                    if not base:
-                        continue
-                    qv = _safe_float((t or {}).get("quoteVolume"))
-                    if qv is None:
-                        info = (t or {}).get("info") if isinstance((t or {}).get("info"), dict) else {}
-                        # OKX：volCcy24h = 24h 成交额(USDT)；vol24h 多为张数，不能参与排名
-                        qv = _safe_float(info.get("volCcy24h"))
-                    if qv is None:
-                        bv = _safe_float((t or {}).get("baseVolume"))
-                        lp = _safe_float((t or {}).get("last"))
-                        if bv is not None and lp is not None:
-                            qv = bv * lp
-                    if qv is None or qv <= 0:
-                        continue
-                    prev = by_base.get(base)
-                    if prev is None or float(qv) > prev:
-                        by_base[base] = float(qv)
-                except Exception:
-                    continue
+            by_base = _okx_usdt_swap_volume_by_base()
             scored = sorted(by_base.items(), key=lambda x: x[1], reverse=True)
             ranks = {base: idx for idx, (base, _) in enumerate(scored, 1)}
             LIQUIDITY_RANK_CACHE["ranks"] = ranks
+            LIQUIDITY_RANK_CACHE["volumes"] = dict(by_base)
             LIQUIDITY_RANK_CACHE["total"] = len(scored)
+            LIQUIDITY_RANK_CACHE["version"] = cache_ver
             LIQUIDITY_RANK_CACHE["updated_at"] = now_ts
         except Exception:
             pass
@@ -4910,8 +4947,10 @@ def api_symbol_liquidity_rank():
     if not symbol:
         return jsonify({"ok": False, "msg": "symbol 不能为空"}), 400
     rank, total = _daily_volume_rank(symbol)
+    base = journal_coin_from_symbol(symbol)
+    vol_24h = (LIQUIDITY_RANK_CACHE.get("volumes") or {}).get(base)
     if total <= 0:
-        return jsonify({"ok": False, "msg": "日成交量排名读取失败"}), 502
+        return jsonify({"ok": False, "msg": "24h成交额排名读取失败"}), 502
     if rank is None:
         return jsonify(
             {
@@ -4919,6 +4958,7 @@ def api_symbol_liquidity_rank():
                 "symbol": symbol,
                 "rank": None,
                 "total": int(total),
+                "vol_usdt_24h": vol_24h,
                 "in_top30": False,
                 "rank_max": KEY_DAILY_VOLUME_RANK_MAX,
             }
@@ -4930,6 +4970,7 @@ def api_symbol_liquidity_rank():
             "symbol": symbol,
             "rank": int(rank),
             "total": int(total),
+            "vol_usdt_24h": vol_24h,
             "in_top30": in_top,
             "in_top": in_top,
             "rank_max": KEY_DAILY_VOLUME_RANK_MAX,
diff --git a/crypto_monitor_okx/templates/index.html b/crypto_monitor_okx/templates/index.html
index e355c76..fbcb715 100644
--- a/crypto_monitor_okx/templates/index.html
+++ b/crypto_monitor_okx/templates/index.html
@@ -1461,7 +1461,7 @@ if(keyForm){
                 const rankMax = data.rank_max || 30;
                 const inTop = data.in_top != null ? data.in_top : data.in_top30;
                 if(data.rank == null || !inTop){
-                    alert(`${data.symbol} 当前日成交量排名 ${data.rank == null ? "—" : data.rank}/${data.total}，不在前${rankMax}，已拦截。`);
+                    alert(`${data.symbol} 当前24h成交额排名 ${data.rank == null ? "—" : data.rank}/${data.total}，不在前${rankMax}，已拦截。`);
                     return;
                 }
                 keyForm.submit();