diff --git a/.env.example b/.env.example
index 0b874ce..a74823e 100644
--- a/.env.example
+++ b/.env.example
@@ -60,7 +60,7 @@ MAKER_MAX_CLOSE_SLIPPAGE_PCT=0.05       # Maker close slippage guard (fallbacks
 MAKER_PRICE_TICK=0.1                    # Maker price tick size (defaults to PRICE_TICK)
 
 # Maker-points Binance depth imbalance monitor
-MAKER_POINTS_BINANCE_DEPTH_WINDOW_BPS=5       # Binance depth monitor window around best bid/ask (bps)
+MAKER_POINTS_BINANCE_DEPTH_WINDOW_BPS=3       # Binance depth monitor window around best bid/ask (bps)
 MAKER_POINTS_BINANCE_DEPTH_IMBALANCE_RATIO=8  # Imbalance threshold ratio (e.g. 8 => one side >= 8x)
 
 # Grid strategy defaults
diff --git a/docs/standx/maker-points-guide.md b/docs/standx/maker-points-guide.md
index 98449ba..cd181e7 100644
--- a/docs/standx/maker-points-guide.md
+++ b/docs/standx/maker-points-guide.md
@@ -132,7 +132,7 @@ MAKER_POINTS_ORDER_AMOUNT=0.01
 MAKER_POINTS_CLOSE_THRESHOLD=0.1
 MAKER_POINTS_STOP_LOSS_USD=0
 MAKER_POINTS_MIN_REPRICE_BPS=3
-MAKER_POINTS_BINANCE_DEPTH_WINDOW_BPS=5
+MAKER_POINTS_BINANCE_DEPTH_WINDOW_BPS=3
 MAKER_POINTS_BINANCE_DEPTH_IMBALANCE_RATIO=8
 
 # ===== 挂单档位开关 =====
@@ -175,7 +175,7 @@ MAKER_POINTS_ORDER_AMOUNT=0.01
 MAKER_POINTS_CLOSE_THRESHOLD=0.1
 MAKER_POINTS_STOP_LOSS_USD=0
 MAKER_POINTS_MIN_REPRICE_BPS=3
-MAKER_POINTS_BINANCE_DEPTH_WINDOW_BPS=5
+MAKER_POINTS_BINANCE_DEPTH_WINDOW_BPS=3
 MAKER_POINTS_BINANCE_DEPTH_IMBALANCE_RATIO=8
 MAKER_POINTS_BAND_0_10=true
 MAKER_POINTS_BAND_10_30=true
@@ -218,7 +218,7 @@ bun run pm2:start:maker-points
 | `MAKER_POINTS_ORDER_AMOUNT` | 每笔挂单数量 | 建议 `0.01` 起步 |
 | `MAKER_POINTS_CLOSE_THRESHOLD` | 持仓达到多少开始平仓 | 设为 `0` 表示不自动平仓 |
 | `MAKER_POINTS_STOP_LOSS_USD` | 亏损多少美元强制平仓 | 设为 `0` 表示关闭止损 |
-| `MAKER_POINTS_BINANCE_DEPTH_WINDOW_BPS` | Binance 失衡检测窗口（bps） | 默认 `5` |
+| `MAKER_POINTS_BINANCE_DEPTH_WINDOW_BPS` | Binance 失衡检测窗口（bps） | 默认 `3` |
 | `MAKER_POINTS_BINANCE_DEPTH_IMBALANCE_RATIO` | Binance 失衡比例阈值 | 默认 `8` |
 | `MAKER_POINTS_BAND_*` | 三个挂单档位的开关 | 全部 `true` 即可 |
 | `STANDX_TOKEN_CREATE_DATE` | Token 创建日期 | 推荐配置，格式 YYYY-MM-DD |
diff --git a/src/config.ts b/src/config.ts
index fcdd9b8..2cbd705 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -227,7 +227,7 @@ export interface MakerPointsConfig {
   minRepriceBps: number;
   /** 是否根据 Binance 盘口深度失衡自动取消单边挂单，默认 true */
   enableBinanceDepthCancel: boolean;
-  /** Binance 深度监控窗口（bps），默认 5 */
+  /** Binance 深度监控窗口（bps），默认 3 */
   binanceDepthWindowBps?: number;
   /** Binance 深度失衡比例阈值，默认 8 */
   binanceDepthImbalanceRatio?: number;
@@ -258,7 +258,7 @@ export const makerPointsConfig: MakerPointsConfig = {
   band30To100Amount: parseNumber(process.env.MAKER_POINTS_BAND_30_100_AMOUNT, defaultMakerPointsAmount),
   minRepriceBps: parseNumber(process.env.MAKER_POINTS_MIN_REPRICE_BPS, 3),
   enableBinanceDepthCancel: parseBoolean(process.env.MAKER_POINTS_BINANCE_DEPTH_CANCEL, true),
-  binanceDepthWindowBps: parseNumber(process.env.MAKER_POINTS_BINANCE_DEPTH_WINDOW_BPS, 5),
+  binanceDepthWindowBps: parseNumber(process.env.MAKER_POINTS_BINANCE_DEPTH_WINDOW_BPS, 3),
   binanceDepthImbalanceRatio: parseNumber(process.env.MAKER_POINTS_BINANCE_DEPTH_IMBALANCE_RATIO, 8),
   filterMinDepth: parseNumber(process.env.MAKER_POINTS_FILTER_MIN_DEPTH, 10),
 };
diff --git a/src/strategy/maker-points-engine.ts b/src/strategy/maker-points-engine.ts
index 7084ba2..0685f38 100644
--- a/src/strategy/maker-points-engine.ts
+++ b/src/strategy/maker-points-engine.ts
@@ -211,7 +211,7 @@ export class MakerPointsEngine {
         : 8,
       depthWindowBps: Number.isFinite(this.config.binanceDepthWindowBps)
         ? Math.max(1, Number(this.config.binanceDepthWindowBps))
-        : 5,
+        : 3,
       speedMs: 100,
       logger: (context, error) => {
         this.tradeLog.push("warn", `Binance ${context} 异常: ${extractMessage(error)}`);
diff --git a/tests/maker-points-binance-depth-config.test.ts b/tests/maker-points-binance-depth-config.test.ts
index 81291e1..52e391e 100644
--- a/tests/maker-points-binance-depth-config.test.ts
+++ b/tests/maker-points-binance-depth-config.test.ts
@@ -27,7 +27,7 @@ class StubAdapter implements ExchangeAdapter {
 }
 
 describe("MakerPointsEngine Binance depth monitor config", () => {
-  it("uses default 5bps window and ratio 8", () => {
+  it("uses default 3bps window and ratio 8", () => {
     const engine = new MakerPointsEngine(
       {
         symbol: "BTC-USD",
@@ -55,7 +55,7 @@ describe("MakerPointsEngine Binance depth monitor config", () => {
     const trackerOptions = ((engine as any).binanceDepth as { options?: { depthWindowBps?: number; ratio?: number } })
       .options;
 
-    expect(trackerOptions?.depthWindowBps).toBe(5);
+    expect(trackerOptions?.depthWindowBps).toBe(3);
     expect(trackerOptions?.ratio).toBe(8);
 
     engine.stop();