diff --git a/lib/common/static/options_panel.js b/lib/common/static/options_panel.js
index fffd075..804446e 100644
--- a/lib/common/static/options_panel.js
+++ b/lib/common/static/options_panel.js
@@ -1450,8 +1450,14 @@
     const uly = state.underlying;
     const seq = ++chainLoadSeq;
     const btn = document.getElementById("opt-load-chain");
-    if (btn && !soft) btn.disabled = true;
-    if (!soft) {
+    const hadChain = chainHasExpiries(state.chain) && state.chain.underlying === uly;
+    if (btn && !soft) {
+      btn.disabled = true;
+      if (!btn.dataset.origText) btn.dataset.origText = btn.textContent || "刷新链";
+      btn.textContent = "刷新中…";
+    }
+    // 已有链时不先清空表格,避免「白屏等很久」的体感
+    if (!soft && !hadChain) {
       setExpirySelectStatus("加载到期日中…");
       const tbody = document.getElementById("opt-strike-tbody");
       if (tbody) {
@@ -1462,9 +1468,18 @@
     try {
       let d = null;
       let lastMsg = "";
-      for (let attempt = 0; attempt < 3; attempt++) {
+      const expMs = (document.getElementById("opt-exp-select") || {}).value || "";
+      // WS 已热时走 fast,跳过最慢的整家族 REST tickers
+      const useFast = soft || quoteLiveWsOk || hadChain;
+      const maxAttempts = soft ? 2 : 3;
+      for (let attempt = 0; attempt < maxAttempts; attempt++) {
         if (seq !== chainLoadSeq) return;
-        d = await apiJson("/api/options/chain?underlying=" + encodeURIComponent(uly));
+        let url =
+          "/api/options/chain?underlying=" +
+          encodeURIComponent(uly) +
+          (useFast ? "&fast=1" : "");
+        if (expMs) url += "&exp_time=" + encodeURIComponent(expMs);
+        d = await apiJson(url);
         if (seq !== chainLoadSeq) return;
         if (d && d.ok && chainHasExpiries(d)) break;
         lastMsg = (d && (d.msg || d.chain_error)) || "暂无到期日";
@@ -1472,14 +1487,14 @@
           !!(d && d.rate_limited) ||
           /50011|Too Many Requests|过于频繁/i.test(String(lastMsg || ""));
         d = null;
-        if (attempt < 2) {
-          if (!soft) {
+        if (attempt < maxAttempts - 1) {
+          if (!soft && !hadChain) {
             setExpirySelectStatus(
               rateLimited ? "OKX 限频,稍后重试…" : "重试加载到期日…"
             );
           }
           await new Promise(function (resolve) {
-            setTimeout(resolve, rateLimited ? 1200 * (attempt + 1) : 400);
+            setTimeout(resolve, rateLimited ? 1200 * (attempt + 1) : 300);
           });
         }
       }
@@ -1489,6 +1504,7 @@
           if (!soft) {
             renderExpiries();
             renderStrikes();
+            void watchCurrentExpiryQuotes();
           }
           return;
         }
@@ -1510,7 +1526,7 @@
         alert(friendly);
         return;
       }
-      const keepExp = soft ? (document.getElementById("opt-exp-select") || {}).value : "";
+      const keepExp = soft || hadChain ? (document.getElementById("opt-exp-select") || {}).value : "";
       state.chain = d;
       panelCache.chain = d;
       panelCache.underlying = uly;
@@ -1518,7 +1534,7 @@
       chainQuotedAt = Date.now();
       lastChainSoftAt = chainQuotedAt;
       syncAskLiqFilterFromChain(d);
-      if (!soft) {
+      if (!soft && !hadChain) {
         state.selectedInst = null;
         resetMoneyFilterToAll();
         state.strikeExpandAll = false;
@@ -1528,18 +1544,19 @@
       }
       updateUnderlyingLabel();
       renderExpiries();
-      if (soft && keepExp) {
+      if (keepExp) {
         const sel = document.getElementById("opt-exp-select");
         if (sel && Array.from(sel.options).some(function (o) { return o.value === keepExp; })) {
           sel.value = keepExp;
         }
       }
-      // soft 时保留 selectedInst；renderStrikes 会先 park 再按 prevSelected 静默重挂下单面板
+      // soft/已有链时保留 selectedInst；renderStrikes 会先 park 再按 prevSelected 静默重挂下单面板
       renderStrikes();
       void watchCurrentExpiryQuotes();
       startQuoteLiveStream();
     } catch (e) {
       if (seq !== chainLoadSeq || soft) return;
+      if (hadChain) return;
       setExpirySelectStatus("选择到期日");
       const tbody = document.getElementById("opt-strike-tbody");
       if (tbody) {
@@ -1549,7 +1566,10 @@
           "</td></tr>";
       }
     } finally {
-      if (seq === chainLoadSeq && btn) btn.disabled = false;
+      if (seq === chainLoadSeq && btn) {
+        btn.disabled = false;
+        if (btn.dataset.origText) btn.textContent = btn.dataset.origText;
+      }
     }
   }
 
diff --git a/lib/exchange/okx_options_lib.py b/lib/exchange/okx_options_lib.py
index 4fb4e15..5093e7b 100644
--- a/lib/exchange/okx_options_lib.py
+++ b/lib/exchange/okx_options_lib.py
@@ -30,6 +30,9 @@ _INSTRUMENTS_CACHE: dict[str, dict[str, Any]] = {}
 _INSTRUMENTS_CACHE_LOCK = threading.Lock()
 _INSTRUMENTS_CACHE_TTL_SEC = 90.0
 _INSTRUMENTS_STALE_SEC = 600.0
+_TICKERS_CACHE: dict[str, dict[str, Any]] = {}
+_TICKERS_CACHE_LOCK = threading.Lock()
+_TICKERS_CACHE_TTL_SEC = 8.0
 
 
 def invalidate_options_balance_cache() -> None:
@@ -712,17 +715,40 @@ def fetch_option_instruments(
     return []
 
 
-def fetch_option_tickers(ex: ccxt.okx, inst_family: str) -> dict[str, dict[str, Any]]:
+def fetch_option_tickers(
+    ex: ccxt.okx,
+    inst_family: str,
+    *,
+    force: bool = False,
+) -> dict[str, dict[str, Any]]:
+    family = (inst_family or "").strip()
+    if not family:
+        return {}
+    now = time.time()
+    with _TICKERS_CACHE_LOCK:
+        cached = _TICKERS_CACHE.get(family)
+    if (
+        not force
+        and cached
+        and now - float(cached.get("updated_at") or 0) < _TICKERS_CACHE_TTL_SEC
+        and isinstance(cached.get("rows"), dict)
+        and cached["rows"]
+    ):
+        return dict(cached["rows"])
+
     out: dict[str, dict[str, Any]] = {}
     last_err: BaseException | None = None
     for attempt in range(3):
         try:
             rows = ex.public_get_market_tickers(
-                {"instType": "OPTION", "instFamily": inst_family}
+                {"instType": "OPTION", "instFamily": family}
             ).get("data") or []
             for r in rows:
                 if isinstance(r, dict) and r.get("instId"):
                     out[str(r["instId"])] = r
+            if out:
+                with _TICKERS_CACHE_LOCK:
+                    _TICKERS_CACHE[family] = {"updated_at": time.time(), "rows": dict(out)}
             return out
         except Exception as e:
             last_err = e
@@ -730,6 +756,8 @@ def fetch_option_tickers(ex: ccxt.okx, inst_family: str) -> dict[str, dict[str,
                 time.sleep(0.6 * (attempt + 1))
                 continue
             break
+    if cached and isinstance(cached.get("rows"), dict) and cached["rows"]:
+        return dict(cached["rows"])
     if last_err is not None and _is_okx_rate_limit(last_err):
         return out
     return out
@@ -743,6 +771,9 @@ def build_option_chain(
     itm_only: bool = True,
     itm_max_dist_usd: float = 30.0,
     index_px: float | None = None,
+    tickers_override: dict[str, dict[str, Any]] | None = None,
+    fetch_tickers: bool = True,
+    force_tickers: bool = False,
 ) -> dict[str, Any]:
     u = (underlying or "ETH").upper()
     family = f"{u}-USD_UM"
@@ -763,7 +794,13 @@ def build_option_chain(
         rate_limited = _is_okx_rate_limit(e)
         if rate_limited:
             instruments_err = "OKX 请求过于频繁(50011),请稍后点「刷新链」重试"
-    tickers = fetch_option_tickers(ex, family)
+    tickers: dict[str, dict[str, Any]] = {}
+    if fetch_tickers:
+        tickers = fetch_option_tickers(ex, family, force=force_tickers)
+    if tickers_override:
+        for iid, row in tickers_override.items():
+            if isinstance(row, dict) and iid:
+                tickers[str(iid)] = {**(tickers.get(str(iid)) or {}), **row}
     expiries: dict[str, list[dict[str, Any]]] = {}
     skipped_no_index = 0
     for meta in instruments:
diff --git a/lib/options/options_quote_live_lib.py b/lib/options/options_quote_live_lib.py
index 22a9e66..ba15b91 100644
--- a/lib/options/options_quote_live_lib.py
+++ b/lib/options/options_quote_live_lib.py
@@ -158,7 +158,58 @@ class OptionsQuoteLive:
         args = [{"channel": "tickers", "instId": iid} for iid in merged]
         for iid in sorted(index_insts):
             args.append({"channel": "index-tickers", "instId": iid})
-        self._ws.set_subscriptions(args)
+        # 订阅可能分片 sleep,不能堵 Flask 请求线程
+        threading.Thread(
+            target=self._ws.set_subscriptions,
+            args=(args,),
+            name="okx-options-quote-sub",
+            daemon=True,
+        ).start()
+
+    def as_okx_tickers(self, underlying: str | None = None) -> dict[str, dict[str, Any]]:
+        """转成 build_option_chain 可用的 OKX ticker 字段."""
+        u = (underlying or "").upper()
+        out: dict[str, dict[str, Any]] = {}
+        with self._lock:
+            for inst_id, q in self._tickers.items():
+                if u and str(q.get("underlying") or "").upper() not in ("", u):
+                    continue
+                row: dict[str, Any] = {"instId": inst_id}
+                if q.get("ask") is not None and not q.get("ask_estimated"):
+                    row["askPx"] = q.get("ask")
+                    row["askSz"] = q.get("ask_sz")
+                if q.get("bid") is not None:
+                    row["bidPx"] = q.get("bid")
+                    row["bidSz"] = q.get("bid_sz")
+                if q.get("mark_px") is not None:
+                    row["markPx"] = q.get("mark_px")
+                out[inst_id] = row
+        return out
+
+    def index_px_for(self, underlying: str) -> float | None:
+        u = (underlying or "").upper()
+        with self._lock:
+            return self._index_by_uly.get(u)
+
+    def is_ws_fresh(self, *, max_age_sec: float = 15.0) -> bool:
+        if not self._ws.connected:
+            return False
+        last = float(self._ws.last_msg_at or 0)
+        return last > 0 and (time.time() - last) <= max_age_sec
+
+    def schedule_seed_from_chain(
+        self,
+        chain: dict[str, Any],
+        *,
+        exp_time: str | int | None = None,
+        watcher_id: str | None = None,
+    ) -> None:
+        threading.Thread(
+            target=self.seed_from_chain,
+            kwargs={"chain": chain, "exp_time": exp_time, "watcher_id": watcher_id},
+            name="options-quote-seed",
+            daemon=True,
+        ).start()
 
     def seed_from_chain(
         self,
diff --git a/lib/options/options_register.py b/lib/options/options_register.py
index c57c37c..79d0991 100644
--- a/lib/options/options_register.py
+++ b/lib/options/options_register.py
@@ -374,6 +374,24 @@ def register_options_routes(app: Flask, cfg: dict[str, Any]) -> None:
         u = (request.args.get("underlying") or cfg["default_underly"]).upper()
         # 热更新:链展示天数每次读 env,保存后刷新链即可
         chain_max_dte = _env_float("OKX_OPTIONS_CHAIN_MAX_DTE_DAYS", float(cfg.get("chain_max_dte_days") or 14))
+        fast = (request.args.get("fast") or "").strip().lower() in ("1", "true", "yes")
+        force_tickers = (request.args.get("force_tickers") or "").strip().lower() in ("1", "true", "yes")
+        watch_exp = (request.args.get("exp_time") or "").strip() or None
+        live_index = None
+        live_tickers = None
+        ws_fresh = False
+        try:
+            from lib.options.options_quote_live_lib import options_quote_live
+
+            ws_fresh = options_quote_live.is_ws_fresh()
+            live_index = options_quote_live.index_px_for(u)
+            live_tickers = options_quote_live.as_okx_tickers(u) or None
+        except Exception:
+            pass
+        # fast: WS 已热则跳过整家族 REST tickers(最慢的一步),用 WS 缓存覆盖
+        fetch_tickers = True
+        if fast and ws_fresh and not force_tickers:
+            fetch_tickers = False
         try:
             chain = cfg["build_option_chain"](
                 ex,
@@ -381,6 +399,10 @@ def register_options_routes(app: Flask, cfg: dict[str, Any]) -> None:
                 max_dte_days=chain_max_dte,
                 itm_only=False,
                 itm_max_dist_usd=cfg["itm_max_dist"],
+                index_px=live_index,
+                tickers_override=live_tickers,
+                fetch_tickers=fetch_tickers,
+                force_tickers=force_tickers,
             )
         except Exception as e:
             return jsonify({"ok": False, "msg": f"加载期权链失败: {e}"})
@@ -393,8 +415,7 @@ def register_options_routes(app: Flask, cfg: dict[str, Any]) -> None:
             try:
                 from lib.options.options_quote_live_lib import options_quote_live
 
-                watch_exp = (request.args.get("exp_time") or "").strip() or None
-                options_quote_live.seed_from_chain(chain, exp_time=watch_exp)
+                options_quote_live.schedule_seed_from_chain(chain, exp_time=watch_exp)
             except Exception:
                 pass
         if not expiries:
@@ -407,6 +428,8 @@ def register_options_routes(app: Flask, cfg: dict[str, Any]) -> None:
                     "ask_liq_filter_enabled": ask_liq_filter,
                     "budget_buffer": budget_buffer,
                     "trade_budget": cfg["trade_budget"],
+                    "chain_fast": fast,
+                    "ws_fresh": ws_fresh,
                 }
             )
         return jsonify(
@@ -418,6 +441,9 @@ def register_options_routes(app: Flask, cfg: dict[str, Any]) -> None:
                 "budget_buffer": budget_buffer,
                 "trade_budget": cfg["trade_budget"],
                 "quote_live": True,
+                "chain_fast": fast,
+                "ws_fresh": ws_fresh,
+                "tickers_fetched": fetch_tickers,
             }
         )
 
diff --git a/lib/options/templates/options_panel.html b/lib/options/templates/options_panel.html
index 84306f7..f2f7b0d 100644
--- a/lib/options/templates/options_panel.html
+++ b/lib/options/templates/options_panel.html
@@ -322,4 +322,4 @@
     </div>
 </div>
 <script src="/static/options_expiry_countdown.js?v=1"></script>
-<script src="/static/options_panel.js?v=58"></script>
+<script src="/static/options_panel.js?v=59"></script>