diff --git a/apps/api/routes/stats.py b/apps/api/routes/stats.py
index 2adf860..289d7e6 100644
--- a/apps/api/routes/stats.py
+++ b/apps/api/routes/stats.py
@@ -9,6 +9,7 @@ from apps.worker.settle import ensure_settlements_for_ymds
 from packages.config import get_settings
 from packages.db import Repository
 from packages.domain.aggregate import leverage_stats_payload, move_points_stats_payload
+from packages.domain.expiry_filter import filter_rows_min_hours_to_expiry
 from packages.domain.range import resolve_range
 
 router = APIRouter(prefix="/stats", tags=["stats"], dependencies=[Depends(require_auth)])
@@ -26,14 +27,32 @@ def _range_info(range_name: str, date: str | None) -> dict:
         raise HTTPException(status_code=400, detail=str(e)) from e
 
 
+def _validate_min_hours(min_hours: float) -> float:
+    # 8–48，步进 2（与前端一致）
+    h = float(min_hours)
+    if h < 8 or h > 48 or abs(h - round(h)) > 1e-9 or int(round(h)) % 2 != 0:
+        raise HTTPException(
+            status_code=400,
+            detail="min_hours must be even integer in [8, 48]",
+        )
+    return float(int(round(h)))
+
+
 @router.get("/leverage")
 def leverage_stats(
     range: str = Query(default="day", pattern="^(day|week|month)$"),
     date: str | None = Query(default=None, description="锚点日 YYYY-MM-DD（上海）"),
     side: str = Query(default="both", pattern="^(C|P|both)$"),
     bucket_minutes: int = Query(default=60, ge=15, le=120),
+    min_hours: float = Query(
+        default=12,
+        ge=8,
+        le=48,
+        description="采样时距离到期 ≥ 该小时数才计入",
+    ),
 ) -> dict:
     s = get_settings()
+    mh = _validate_min_hours(min_hours)
     info = _range_info(range, date)
     repo = Repository(s.db_path)
     try:
@@ -43,13 +62,16 @@ def leverage_stats(
             side=side,
             underlying=s.underlying,
         )
-        return leverage_stats_payload(
+        rows = filter_rows_min_hours_to_expiry(rows, min_hours=mh)
+        payload = leverage_stats_payload(
             rows,
             range_info=info,
             bucket_minutes=bucket_minutes,
             min_leverage=float(s.min_option_leverage),
             side=side,
         )
+        payload["min_hours"] = mh
+        return payload
     finally:
         repo.close()
 
@@ -60,8 +82,15 @@ def move_points_stats(
     date: str | None = Query(default=None, description="锚点日 YYYY-MM-DD"),
     side: str = Query(default="both", pattern="^(C|P|both)$"),
     bucket_minutes: int = Query(default=60, ge=15, le=120),
+    min_hours: float = Query(
+        default=12,
+        ge=8,
+        le=48,
+        description="采样时距离到期 ≥ 该小时数才计入",
+    ),
 ) -> dict:
     s = get_settings()
+    mh = _validate_min_hours(min_hours)
     info = _range_info(range, date)
     repo = Repository(s.db_path)
     try:
@@ -71,6 +100,7 @@ def move_points_stats(
             side=side,
             underlying=s.underlying,
         )
+        rows = filter_rows_min_hours_to_expiry(rows, min_hours=mh)
         ymds = sorted({str(r.get("expiry_ymd")) for r in rows if r.get("expiry_ymd")})
         # 懒回填：已到期但缺锚点时尽量补齐（本地指数优先，失败则跳过）
         try:
@@ -83,13 +113,15 @@ def move_points_stats(
         except Exception:  # noqa: BLE001 — 回填失败不阻断统计
             pass
         settlements = repo.list_settlements(ymds)
-        return move_points_stats_payload(
+        payload = move_points_stats_payload(
             rows,
             settlements,
             range_info=info,
             bucket_minutes=bucket_minutes,
             side=side,
         )
+        payload["min_hours"] = mh
+        return payload
     finally:
         repo.close()
 
@@ -100,14 +132,21 @@ def ops_map(
     date: str | None = Query(default=None),
     side: str = Query(default="both", pattern="^(C|P|both)$"),
     bucket_minutes: int = Query(default=60, ge=15, le=120),
+    min_hours: float = Query(default=12, ge=8, le=48),
 ) -> dict:
-    lev = leverage_stats(range=range, date=date, side=side, bucket_minutes=bucket_minutes)
-    mov = move_points_stats(range=range, date=date, side=side, bucket_minutes=bucket_minutes)
+    mh = _validate_min_hours(min_hours)
+    lev = leverage_stats(
+        range=range, date=date, side=side, bucket_minutes=bucket_minutes, min_hours=mh
+    )
+    mov = move_points_stats(
+        range=range, date=date, side=side, bucket_minutes=bucket_minutes, min_hours=mh
+    )
     return {
         "range": range,
         "date": lev.get("date"),
         "side": side,
         "bucket_minutes": bucket_minutes,
+        "min_hours": mh,
         "leverage": lev,
         "move_points": mov,
     }
diff --git a/packages/domain/expiry_filter.py b/packages/domain/expiry_filter.py
new file mode 100644
index 0000000..b9643b6
--- /dev/null
+++ b/packages/domain/expiry_filter.py
@@ -0,0 +1,32 @@
+"""按采样时刻距离到期时长过滤行情样本。"""
+
+from __future__ import annotations
+
+from typing import Any, Iterable
+
+from packages.domain.expiry import expiry_ms_from_ymd
+
+
+def hours_to_expiry_at(ts_ms: int, expiry_ymd: str) -> float | None:
+    try:
+        ems = expiry_ms_from_ymd(str(expiry_ymd))
+    except ValueError:
+        return None
+    return (ems - int(ts_ms)) / 3_600_000.0
+
+
+def filter_rows_min_hours_to_expiry(
+    rows: Iterable[dict[str, Any]],
+    *,
+    min_hours: float,
+) -> list[dict[str, Any]]:
+    """保留采样时距到期 ≥ min_hours 的样本。"""
+    out: list[dict[str, Any]] = []
+    mh = float(min_hours)
+    for r in rows:
+        h = hours_to_expiry_at(int(r.get("ts_ms") or 0), str(r.get("expiry_ymd") or ""))
+        if h is None:
+            continue
+        if h >= mh:
+            out.append(r)
+    return out
diff --git a/tests/test_expiry_filter.py b/tests/test_expiry_filter.py
new file mode 100644
index 0000000..ca3e322
--- /dev/null
+++ b/tests/test_expiry_filter.py
@@ -0,0 +1,19 @@
+from packages.domain.expiry import expiry_ms_from_ymd
+from packages.domain.expiry_filter import filter_rows_min_hours_to_expiry, hours_to_expiry_at
+
+
+def test_filter_min_hours():
+    # 到期 260803 → 2026-08-03 08:00 UTC
+    ymd = "260803"
+    ems = expiry_ms_from_ymd(ymd)
+    # 距到期 20h / 10h 的采样点
+    ts_20h = ems - 20 * 3_600_000
+    ts_10h = ems - 10 * 3_600_000
+    rows = [
+        {"ts_ms": ts_20h, "expiry_ymd": ymd, "side": "C"},
+        {"ts_ms": ts_10h, "expiry_ymd": ymd, "side": "P"},
+    ]
+    assert hours_to_expiry_at(ts_20h, ymd) == 20
+    kept = filter_rows_min_hours_to_expiry(rows, min_hours=12)
+    assert len(kept) == 1
+    assert kept[0]["side"] == "C"
diff --git a/web/dist/index.html b/web/dist/index.html
index 4faef97..aaf6757 100644
--- a/web/dist/index.html
+++ b/web/dist/index.html
@@ -34,7 +34,7 @@
     .seg button { appearance: none; border: 0; background: transparent; color: var(--muted); padding: 0.45rem 0.85rem; cursor: pointer; }
     .seg button.active { background: #1e2a3a; color: var(--text); }
     .date-field { color: var(--muted); font-size: 0.85rem; display: inline-flex; gap: 0.5rem; align-items: center; }
-    .date-field input { background: var(--panel); border: 1px solid #243041; color: var(--text); border-radius: 6px; padding: 0.35rem 0.5rem; }
+    .date-field input, .date-field select { background: var(--panel); border: 1px solid #243041; color: var(--text); border-radius: 6px; padding: 0.35rem 0.5rem; }
     .chart-wrap { background: var(--panel); border: 1px solid #243041; border-radius: 10px; padding: 0.75rem 0.5rem; margin-top: 0.5rem; }
     .chart-title { padding: 0 0.75rem 0.25rem; color: var(--muted); font-size: 0.85rem; }
     .chart-svg { width: 100%; height: auto; display: block; }
@@ -123,6 +123,9 @@
           <button type="button" data-side="P">Put</button>
         </div>
         <label class="date-field">锚点日 <input type="date" id="anchorDate" /></label>
+        <label class="date-field">距离到期 ≥
+          <select id="minHours" aria-label="距离到期最小小时数"></select>
+        </label>
       </div>
       <div class="row">
         <div class="tile"><div class="label">范围</div><div class="value" id="opsRange" style="font-size:1.05rem">—</div><div class="hint" id="opsSamples">—</div></div>
@@ -211,7 +214,7 @@
   </div>
   <script>
     const TOKEN_KEY = "mi_token";
-    const state = { page: "dash", range: "day", side: "both", moveMode: "abs", lastMov: null, authRequired: false, loadedUsername: "admin" };
+    const state = { page: "dash", range: "day", side: "both", moveMode: "abs", minHours: 12, lastMov: null, authRequired: false, loadedUsername: "admin" };
     function getToken() { try { return localStorage.getItem(TOKEN_KEY); } catch { return null; } }
     function setToken(t) { try { if (t) localStorage.setItem(TOKEN_KEY, t); else localStorage.removeItem(TOKEN_KEY); } catch {} }
     function authHeaders() {
@@ -233,6 +236,16 @@
       return d.getFullYear() + "-" + String(d.getMonth()+1).padStart(2,"0") + "-" + String(d.getDate()).padStart(2,"0");
     }
     document.getElementById("anchorDate").value = todayYmd();
+    (function initMinHours() {
+      const sel = document.getElementById("minHours");
+      for (let h = 8; h <= 48; h += 2) {
+        const opt = document.createElement("option");
+        opt.value = String(h);
+        opt.textContent = h + "h";
+        if (h === state.minHours) opt.selected = true;
+        sel.appendChild(opt);
+      }
+    })();
 
     function showLogin() {
       document.getElementById("page-login").classList.remove("hidden");
@@ -540,6 +553,10 @@
       }
     }));
     document.getElementById("anchorDate").addEventListener("change", loadOps);
+    document.getElementById("minHours").addEventListener("change", () => {
+      state.minHours = Number(document.getElementById("minHours").value) || 12;
+      loadOps();
+    });
 
     function drawChart(buckets, minLev) {
       const svg = document.getElementById("levChart");
@@ -681,7 +698,13 @@
 
     async function loadOps() {
       const date = document.getElementById("anchorDate").value;
-      const q = new URLSearchParams({ range: state.range, side: state.side, bucket_minutes: "60", date });
+      const q = new URLSearchParams({
+        range: state.range,
+        side: state.side,
+        bucket_minutes: "60",
+        date,
+        min_hours: String(state.minHours || 12),
+      });
       try {
         const d = await apiFetch("/api/stats/ops-map?" + q).then(r => {
           if (!r.ok) throw new Error("ops-map " + r.status);
diff --git a/web/src/api/client.ts b/web/src/api/client.ts
index b97e3bb..f144c95 100644
--- a/web/src/api/client.ts
+++ b/web/src/api/client.ts
@@ -251,12 +251,14 @@ export async function fetchOpsMap(params: {
   date?: string;
   side?: string;
   bucket_minutes?: number;
+  min_hours?: number;
 }): Promise<OpsMap> {
   const q = new URLSearchParams();
   q.set("range", params.range);
   if (params.date) q.set("date", params.date);
   if (params.side) q.set("side", params.side);
   if (params.bucket_minutes) q.set("bucket_minutes", String(params.bucket_minutes));
+  if (params.min_hours != null) q.set("min_hours", String(params.min_hours));
   const r = await apiFetch(`/api/stats/ops-map?${q}`);
   if (!r.ok) throw new Error(r.status === 401 ? "unauthorized" : "ops-map failed");
   return r.json();
diff --git a/web/src/pages/OpsMap.tsx b/web/src/pages/OpsMap.tsx
index 7715d7a..8aaf65f 100644
--- a/web/src/pages/OpsMap.tsx
+++ b/web/src/pages/OpsMap.tsx
@@ -15,6 +15,8 @@ import { leverageSummary, moveSummary } from "../lib/opsSummary";
 type RangeKey = "day" | "week" | "month";
 type SideKey = "both" | "C" | "P";
 
+const MIN_HOURS_OPTIONS = Array.from({ length: (48 - 8) / 2 + 1 }, (_, i) => 8 + i * 2);
+
 function todayYmd() {
   const d = new Date();
   const y = d.getFullYear();
@@ -29,6 +31,7 @@ export default function OpsMapPage() {
   const [range, setRange] = useState<RangeKey>("day");
   const [side, setSide] = useState<SideKey>("both");
   const [date, setDate] = useState(todayYmd());
+  const [minHours, setMinHours] = useState(12);
   const [moveMode, setMoveMode] = useState<"abs" | "signed">("abs");
   const [data, setData] = useState<OpsMap | null>(null);
   const [err, setErr] = useState<string | null>(null);
@@ -52,7 +55,7 @@ export default function OpsMapPage() {
     if (!ready || needLogin) return;
     let alive = true;
     setLoading(true);
-    fetchOpsMap({ range, date, side, bucket_minutes: 60 })
+    fetchOpsMap({ range, date, side, bucket_minutes: 60, min_hours: minHours })
       .then((d) => {
         if (!alive) return;
         setData(d);
@@ -70,7 +73,7 @@ export default function OpsMapPage() {
     return () => {
       alive = false;
     };
-  }, [range, side, date, ready, needLogin]);
+  }, [range, side, date, minHours, ready, needLogin]);
 
   if (!ready) {
     return (
@@ -122,6 +125,20 @@ export default function OpsMapPage() {
           锚点日
           <input type="date" value={date} onChange={(e) => setDate(e.target.value)} />
         </label>
+        <label className="date-field">
+          距离到期 ≥
+          <select
+            value={minHours}
+            onChange={(e) => setMinHours(Number(e.target.value))}
+            aria-label="距离到期最小小时数"
+          >
+            {MIN_HOURS_OPTIONS.map((h) => (
+              <option key={h} value={h}>
+                {h}h
+              </option>
+            ))}
+          </select>
+        </label>
       </div>
 
       {err && <p style={{ color: "#e85d5d" }}>{err}</p>}
diff --git a/web/src/styles.css b/web/src/styles.css
index e468bd4..1c55eb9 100644
--- a/web/src/styles.css
+++ b/web/src/styles.css
@@ -159,7 +159,8 @@ select.field-input { cursor: pointer; }
   color: var(--muted);
   font-size: 0.85rem;
 }
-.date-field input {
+.date-field input,
+.date-field select {
   background: var(--panel);
   border: 1px solid #243041;
   color: var(--text);