diff --git a/frontend/components/ops/__tests__/opsFeedbackDropdown.test.ts b/frontend/components/ops/__tests__/opsFeedbackDropdown.test.ts
index e7102864..b74f72b9 100644
--- a/frontend/components/ops/__tests__/opsFeedbackDropdown.test.ts
+++ b/frontend/components/ops/__tests__/opsFeedbackDropdown.test.ts
@@ -32,11 +32,11 @@ export function runTests() {
   assert(
     source.includes("积分奖励标准") &&
       source.includes("REWARD_GUIDELINES") &&
-      source.includes("50-100") &&
-      source.includes("200-300") &&
+      source.includes("100") &&
+      source.includes("300") &&
       source.includes("500") &&
-      source.includes("800-1000") &&
-      source.includes("1500+"),
-    "ops feedback page must document manual reward point guidelines",
+      source.includes("1000") &&
+      source.includes("1500"),
+    "ops feedback page must document fixed reward point guidelines",
   );
 }
diff --git a/frontend/components/ops/__tests__/opsFeedbackRewardGrant.test.ts b/frontend/components/ops/__tests__/opsFeedbackRewardGrant.test.ts
index 53909908..eda70687 100644
--- a/frontend/components/ops/__tests__/opsFeedbackRewardGrant.test.ts
+++ b/frontend/components/ops/__tests__/opsFeedbackRewardGrant.test.ts
@@ -27,21 +27,33 @@ export function runTests() {
   assert(
     opsApiSource.includes("grantFeedbackReward") &&
       opsApiSource.includes("/api/ops/feedback/${feedbackId}/reward") &&
-      opsApiSource.includes("reason"),
-    "ops API client must expose grantFeedbackReward with reason",
+      opsApiSource.includes("JSON.stringify({ points })"),
+    "ops API client must expose grantFeedbackReward with fixed points only",
   );
   assert(
-    feedbackPageSource.includes("rewardDrafts") &&
+    feedbackPageSource.includes("REWARD_POINT_OPTIONS") &&
       feedbackPageSource.includes("handleRewardGrant") &&
       feedbackPageSource.includes("发放奖励") &&
-      feedbackPageSource.includes("奖励原因") &&
       feedbackPageSource.includes("opsApi.grantFeedbackReward"),
-    "ops feedback page must provide per-feedback reward grant controls",
+    "ops feedback page must provide fixed-point reward grant controls",
+  );
+  assert(
+    feedbackPageSource.includes('value: 100') &&
+      feedbackPageSource.includes('value: 300') &&
+      feedbackPageSource.includes('value: 500') &&
+      feedbackPageSource.includes('value: 1000') &&
+      feedbackPageSource.includes('value: 1500'),
+    "ops feedback page must use fixed reward point options",
+  );
+  assert(
+    !feedbackPageSource.includes("奖励原因") &&
+      !feedbackPageSource.includes("rewardDrafts") &&
+      !feedbackPageSource.includes("reason:"),
+    "ops feedback page must not ask operators for reward reasons",
   );
   assert(
     feedbackPageSource.includes("已发放") &&
-      feedbackPageSource.includes("reward_points") &&
-      feedbackPageSource.includes("reward_reason"),
+      feedbackPageSource.includes("reward_points"),
     "ops feedback page must show existing feedback reward details",
   );
 }
diff --git a/frontend/components/ops/feedback/FeedbackPageClient.tsx b/frontend/components/ops/feedback/FeedbackPageClient.tsx
index 66e90579..d7a136fe 100644
--- a/frontend/components/ops/feedback/FeedbackPageClient.tsx
+++ b/frontend/components/ops/feedback/FeedbackPageClient.tsx
@@ -18,19 +18,22 @@ const STATUS_OPTIONS = [
 
 const STATUS_UPDATE_OPTIONS = STATUS_OPTIONS.filter((item) => item.key);
 
-const REWARD_GUIDELINES = [
-  { points: "0", title: "无效/重复", detail: "重复反馈、无法复现、非问题" },
-  { points: "50-100", title: "轻量提醒", detail: "文案、体验、小范围提示" },
-  { points: "200-300", title: "可复现 Bug", detail: "加载失败、操作异常、局部影响" },
-  { points: "500", title: "有效数据问题", detail: "城市数据、图表、关键变量异常" },
-  { points: "800-1000", title: "高影响问题", detail: "支付、账号、订阅、核心终端异常" },
-  { points: "1500+", title: "重大事故", detail: "大面积不可用或严重业务损失，谨慎使用" },
+const REWARD_POINT_OPTIONS = [
+  { value: 100, label: "100 分", title: "轻量提醒" },
+  { value: 300, label: "300 分", title: "可复现 Bug" },
+  { value: 500, label: "500 分", title: "有效数据问题" },
+  { value: 1000, label: "1000 分", title: "高影响问题" },
+  { value: 1500, label: "1500 分", title: "重大事故" },
 ] as const;
 
-type RewardDraft = {
-  points: string;
-  reason: string;
-};
+const REWARD_GUIDELINES = [
+  { points: "0", title: "无效/重复", detail: "重复反馈、无法复现、非问题" },
+  { points: "100", title: "轻量提醒", detail: "文案、体验、小范围提示" },
+  { points: "300", title: "可复现 Bug", detail: "加载失败、操作异常、局部影响" },
+  { points: "500", title: "有效数据问题", detail: "城市数据、图表、关键变量异常" },
+  { points: "1000", title: "高影响问题", detail: "支付、账号、订阅、核心终端异常" },
+  { points: "1500", title: "重大事故", detail: "大面积不可用或严重业务损失，谨慎使用" },
+] as const;
 
 function compactDate(value?: string) {
   if (!value) return "—";
@@ -82,7 +85,7 @@ export function FeedbackPageClient() {
   const [payload, setPayload] = useState<UserFeedbackPayload | null>(null);
   const [updatingId, setUpdatingId] = useState<number | null>(null);
   const [rewardingId, setRewardingId] = useState<number | null>(null);
-  const [rewardDrafts, setRewardDrafts] = useState<Record<number, RewardDraft>>({});
+  const [rewardPointsById, setRewardPointsById] = useState<Record<number, string>>({});
 
   const load = async () => {
     setLoading(true);
@@ -127,21 +130,16 @@ export function FeedbackPageClient() {
     }
   };
 
-  const updateRewardDraft = (rowId: number, patch: Partial<RewardDraft>) => {
-    setRewardDrafts((prev) => ({
+  const updateRewardPoints = (rowId: number, points: string) => {
+    setRewardPointsById((prev) => ({
       ...prev,
-      [rowId]: {
-        points: prev[rowId]?.points || "",
-        reason: prev[rowId]?.reason || "",
-        ...patch,
-      },
+      [rowId]: points,
     }));
   };
 
   const handleRewardGrant = async (row: UserFeedbackEntry) => {
-    const draft = rewardDrafts[row.id] || { points: "", reason: "" };
-    const points = Number.parseInt(draft.points, 10);
-    const reason = draft.reason.trim();
+    const selectedPoints = rewardPointsById[row.id] || String(REWARD_POINT_OPTIONS[1].value);
+    const points = Number.parseInt(selectedPoints, 10);
     if (!row.user_email) {
       setError("这条反馈没有绑定用户邮箱，不能从反馈页直接发放积分。");
       return;
@@ -150,15 +148,11 @@ export function FeedbackPageClient() {
       setError("请输入有效的奖励积分。");
       return;
     }
-    if (!reason) {
-      setError("请输入奖励原因，用户账户页会展示这条原因。");
-      return;
-    }
     setRewardingId(row.id);
     setError("");
     try {
-      await opsApi.grantFeedbackReward(row.id, points, reason);
-      setRewardDrafts((prev) => {
+      await opsApi.grantFeedbackReward(row.id, points);
+      setRewardPointsById((prev) => {
         const next = { ...prev };
         delete next[row.id];
         return next;
@@ -253,7 +247,7 @@ export function FeedbackPageClient() {
             ))}
           </div>
           <p className="mt-2 text-xs text-slate-500">
-            先确认反馈是否有效；未复现的问题可先标为已确认/处理中，奖励原因后续发放时需要写清楚。
+            先确认反馈是否有效；未复现的问题可先标为已确认/处理中，奖励发放后会自动记录到用户账户页。
           </p>
         </CardContent>
       </Card>
@@ -301,9 +295,8 @@ export function FeedbackPageClient() {
                 </thead>
                 <tbody>
                   {rows.map((row) => {
-                    const draft = rewardDrafts[row.id] || { points: "", reason: "" };
+                    const selectedPoints = rewardPointsById[row.id] || String(REWARD_POINT_OPTIONS[1].value);
                     const rewardPoints = Number(row.reward_points || 0);
-                    const rewardReason = String(row.reward_reason || "").trim();
                     const rewardStatus = String(row.reward_status || "").toLowerCase();
                     const hasReward = rewardStatus === "granted" && rewardPoints > 0;
                     return (
@@ -330,39 +323,28 @@ export function FeedbackPageClient() {
                           {row.user_email || row.user_id || "—"}
                         </td>
                         <td className="whitespace-nowrap py-3 pr-4 text-xs text-slate-500">{compactDate(row.created_at)}</td>
-                        <td className="min-w-[260px] py-3 pr-4">
+                        <td className="min-w-[170px] py-3 pr-4">
                           {hasReward ? (
                             <div className="rounded-lg border border-emerald-200 bg-emerald-50 px-3 py-2 text-xs">
                               <div className="font-black text-emerald-700">
                                 已发放 +{rewardPoints.toLocaleString()} 分
                               </div>
-                              {rewardReason && (
-                                <div className="mt-1 leading-4 text-emerald-700">
-                                  {rewardReason}
-                                </div>
-                              )}
                             </div>
                           ) : (
                             <div className="space-y-1.5">
-                              <div className="flex gap-1.5">
-                                <input
-                                  type="number"
-                                  min={1}
-                                  max={100000}
-                                  value={draft.points}
-                                  onChange={(event) => updateRewardDraft(row.id, { points: event.target.value })}
-                                  placeholder="积分"
-                                  aria-label="奖励积分"
-                                  className="h-8 w-20 rounded border border-slate-200 bg-white px-2 text-xs font-bold text-slate-700 outline-none focus:border-blue-300 focus:ring-2 focus:ring-blue-100"
-                                />
-                                <input
-                                  value={draft.reason}
-                                  onChange={(event) => updateRewardDraft(row.id, { reason: event.target.value })}
-                                  placeholder="奖励原因"
-                                  aria-label="奖励原因"
-                                  className="h-8 min-w-0 flex-1 rounded border border-slate-200 bg-white px-2 text-xs text-slate-700 outline-none focus:border-blue-300 focus:ring-2 focus:ring-blue-100"
-                                />
-                              </div>
+                              <select
+                                value={selectedPoints}
+                                onChange={(event) => updateRewardPoints(row.id, event.target.value)}
+                                disabled={rewardingId === row.id || !row.user_email}
+                                className="h-8 w-full rounded border border-slate-200 bg-white px-2 text-xs font-bold text-slate-700 outline-none focus:border-blue-300 focus:ring-2 focus:ring-blue-100 disabled:cursor-not-allowed disabled:opacity-60"
+                                aria-label="奖励积分"
+                              >
+                                {REWARD_POINT_OPTIONS.map((item) => (
+                                  <option key={item.value} value={item.value}>
+                                    {item.label} · {item.title}
+                                  </option>
+                                ))}
+                              </select>
                               <Button
                                 type="button"
                                 variant="outline"
diff --git a/frontend/lib/ops-api.ts b/frontend/lib/ops-api.ts
index 5b65ffac..474ab38d 100644
--- a/frontend/lib/ops-api.ts
+++ b/frontend/lib/ops-api.ts
@@ -121,11 +121,11 @@ export const opsApi = {
       body: JSON.stringify({ status }),
     });
   },
-  grantFeedbackReward(feedbackId: string | number, points: number, reason: string) {
+  grantFeedbackReward(feedbackId: string | number, points: number) {
     return opsFetch<Record<string, unknown>>(`/api/ops/feedback/${feedbackId}/reward`, {
       method: "POST",
       headers: { "Content-Type": "application/json" },
-      body: JSON.stringify({ points, reason }),
+      body: JSON.stringify({ points }),
     });
   },
   resolveIncident(eventId: string | number) {
diff --git a/src/database/db_manager.py b/src/database/db_manager.py
index 29e7f04c..9e0e4508 100644
--- a/src/database/db_manager.py
+++ b/src/database/db_manager.py
@@ -1309,8 +1309,6 @@ class DBManager:
         if safe_points <= 0:
             return {"ok": False, "reason": "invalid_amount"}
         normalized_reason = str(reason or "").strip()[:500]
-        if not normalized_reason:
-            return {"ok": False, "reason": "missing_reward_reason"}
 
         now = datetime.now().isoformat()
         with self._get_connection() as conn:
diff --git a/tests/test_user_feedback.py b/tests/test_user_feedback.py
index 9f60454d..266fe348 100644
--- a/tests/test_user_feedback.py
+++ b/tests/test_user_feedback.py
@@ -118,7 +118,6 @@ def test_feedback_reward_grant_adds_points_and_marks_feedback(tmp_path):
     result = db.grant_feedback_reward(
         created["id"],
         points=300,
-        reason="Valid stale METAR report",
     )
 
     assert result["ok"] is True
@@ -126,14 +125,13 @@ def test_feedback_reward_grant_adds_points_and_marks_feedback(tmp_path):
     assert result["points_added"] == 300
     assert result["points_after"] == 350
     assert result["feedback"]["reward_points"] == 300
-    assert result["feedback"]["reward_reason"] == "Valid stale METAR report"
+    assert result["feedback"]["reward_reason"] == ""
     assert result["feedback"]["reward_status"] == "granted"
     assert db.get_points_by_supabase_email("pilot@example.com") == 350
 
     duplicate = db.grant_feedback_reward(
         created["id"],
         points=300,
-        reason="Duplicate grant should not apply",
     )
 
     assert duplicate["ok"] is False
@@ -143,7 +141,7 @@ def test_feedback_reward_grant_adds_points_and_marks_feedback(tmp_path):
 
 def test_ops_feedback_reward_service_returns_operator(monkeypatch):
     class FakeDB:
-        def grant_feedback_reward(self, feedback_id, *, points, reason):
+        def grant_feedback_reward(self, feedback_id, *, points, reason=""):
             return {
                 "ok": True,
                 "feedback_id": feedback_id,
@@ -164,13 +162,12 @@ def test_ops_feedback_reward_service_returns_operator(monkeypatch):
         object(),
         feedback_id=42,
         points=500,
-        reason="High impact chart bug",
     )
 
     assert payload["ok"] is True
     assert payload["operator_email"] == "ops@example.com"
     assert payload["feedback"]["reward_points"] == 500
-    assert payload["feedback"]["reward_reason"] == "High impact chart bug"
+    assert payload["feedback"]["reward_reason"] == ""
 
 
 def test_user_feedback_identity_filter_returns_only_matching_user(tmp_path):
diff --git a/web/core.py b/web/core.py
index 3d276a44..dec6e364 100644
--- a/web/core.py
+++ b/web/core.py
@@ -506,7 +506,7 @@ class GrantPointsRequest(BaseModel):
 
 class FeedbackRewardRequest(BaseModel):
     points: int = Field(..., gt=0, le=100000)
-    reason: str = Field(..., min_length=2, max_length=500)
+    reason: str = Field(default="", max_length=500)
 
 
 def _sf(v) -> Optional[float]:
diff --git a/web/services/ops_api.py b/web/services/ops_api.py
index bacad977..a01eb1e4 100644
--- a/web/services/ops_api.py
+++ b/web/services/ops_api.py
@@ -194,7 +194,7 @@ def grant_ops_feedback_reward(
     *,
     feedback_id: int,
     points: int,
-    reason: str,
+    reason: str = "",
 ) -> Dict[str, Any]:
     admin = _require_ops(request) or {}
     db = DBManager()