diff --git a/pom.xml b/pom.xml
index 2dc4bb2..ee24d4a 100644
--- a/pom.xml
+++ b/pom.xml
@@ -5,7 +5,7 @@
 
     <groupId>com.sample</groupId>
     <artifactId>trend-grid-strategy</artifactId>
-    <version>1.0.4-SNAPSHOT</version>
+    <version>1.0.5-SNAPSHOT</version>
     <name>trend-grid-strategy</name>
     <description>趋势网格策略</description>
 
diff --git a/src/main/java/com/sample/trend/strategy/AutoGridStrategy.java b/src/main/java/com/sample/trend/strategy/AutoGridStrategy.java
index c794009..3eb4638 100644
--- a/src/main/java/com/sample/trend/strategy/AutoGridStrategy.java
+++ b/src/main/java/com/sample/trend/strategy/AutoGridStrategy.java
@@ -36,17 +36,13 @@ import java.util.concurrent.CopyOnWriteArrayList;
  * <p>
  * 网格间距 = atr_multiplier × ATR，并限制在 [min_gap, max_gap] 区间。
  * 下方买单始终最多挂 1 笔：成交后再挂下一格，不会批量铺满网格。
- * 若现价相对挂单价上行超过间距 × 1.5，撤单并按现价重新挂靠下一格，避免买单悬空。
+ * 若挂单价低于「现价 − 撤单网格数 × 间距」，撤单并按现价重新挂靠下一格，避免买单长期悬空。
  * 采用限价挂单买入，买单成交后在「入场价 + 间距」挂限价卖单止盈。
  * 网格间距变化时不撤销已有挂单，已挂卖单价格保持不变。
  */
 public class AutoGridStrategy extends BaseStrategy {
 
     private static final String MARGIN_MODE = "crossed";
-    /**
-     * 现价高于挂单价超过「间距 × 该倍数」时，撤单重挂
-     */
-    private static final BigDecimal BUY_REBASE_MULTIPLIER = new BigDecimal("1.5");
 
     private final Logger logger = LoggerFactory.getLogger(AutoGridStrategy.class);
 
@@ -68,6 +64,10 @@ public class AutoGridStrategy extends BaseStrategy {
      * 最大持仓层数；达到后不再新建买单。待成交买单始终最多 1 笔。
      */
     private int gridCount;
+    /**
+     * 撤单网格数 N：挂单价低于「现价 − N × 间距」时撤单重挂（例：间距 5、N=5 → 撤现价−25 以下的买单）。
+     */
+    private int cancelGridCount;
 
     // 精度
     private int pricePrecision = 2;
@@ -264,7 +264,7 @@ public class AutoGridStrategy extends BaseStrategy {
 
         tryParams("base_quantity", "atr_multiplier", "grid_grp_script", "kline_interval", "kline_period",
                 "grid_adjust_interval", "min_gap", "max_gap", "upper_bound", "lower_bound",
-                "grid_count", "test_mode");
+                "grid_count", "cancel_grid_count", "test_mode");
 
         baseQuantity = getRunParams().getBigDecimal("base_quantity");
         atrMultiplier = getRunParams().getBigDecimal("atr_multiplier");
@@ -285,6 +285,10 @@ public class AutoGridStrategy extends BaseStrategy {
         if (gridCount <= 0) {
             throw new IllegalArgumentException("grid_count 必须大于 0");
         }
+        cancelGridCount = getRunParams().getInteger("cancel_grid_count");
+        if (cancelGridCount <= 0) {
+            throw new IllegalArgumentException("cancel_grid_count 必须大于 0");
+        }
 
         if (lowerBound.compareTo(upperBound) >= 0) {
             throw new IllegalArgumentException("lower_bound 必须小于 upper_bound");
@@ -432,6 +436,7 @@ public class AutoGridStrategy extends BaseStrategy {
         variables.put("upperBound", upperBound == null ? null : upperBound.doubleValue());
         variables.put("lowerBound", lowerBound == null ? null : lowerBound.doubleValue());
         variables.put("gridCount", gridCount);
+        variables.put("cancelGridCount", cancelGridCount);
         variables.put("leverage", leverage);
         variables.put("pricePrecision", pricePrecision);
         variables.put("quantityPrecision", quantityPrecision);
@@ -521,11 +526,12 @@ public class AutoGridStrategy extends BaseStrategy {
 
     /**
      * 价格单边上行时，下方买单会悬空永远不成交。
-     * 当 现价 - 挂单价 > 间距 × 1.5 时，撤单并按现价重新对齐挂单（例：1532 / 间距 5 → 1530）。
+     * 当挂单价低于「现价 − 撤单网格数 × 间距」时，撤单并按现价重新对齐挂单
+     * （例：现价 1532、间距 5、撤单网格数 5 → 撤销 1507 以下的买单，再挂到现价下方一格）。
      */
     private void rebaseStalePendingBuy() {
         if (!canPlaceBuyOrders() || currentPrice == null || currentGridGap == null
-                || currentGridGap.compareTo(BigDecimal.ZERO) <= 0) {
+                || currentGridGap.compareTo(BigDecimal.ZERO) <= 0 || cancelGridCount <= 0) {
             return;
         }
 
@@ -535,9 +541,10 @@ public class AutoGridStrategy extends BaseStrategy {
             }
 
             GridBuyOrder pending = pendingBuyOrders.values().iterator().next();
-            BigDecimal distance = currentPrice.subtract(pending.buyPrice);
-            BigDecimal threshold = currentGridGap.multiply(BUY_REBASE_MULTIPLIER);
-            if (distance.compareTo(threshold) <= 0) {
+            BigDecimal cancelBelow = currentPrice.subtract(
+                    currentGridGap.multiply(BigDecimal.valueOf(cancelGridCount)));
+            // 只撤「现价 − N×间距」以下的挂单，避免半格内频繁追价
+            if (pending.buyPrice.compareTo(cancelBelow) >= 0) {
                 return;
             }
 
@@ -549,12 +556,13 @@ public class AutoGridStrategy extends BaseStrategy {
             try {
                 bitGetClient.cancelOrder(getSymbol(), pending.exchangeOrderId, pending.clientOrderId, null);
                 pendingBuyOrders.remove(priceKey(pending.buyPrice));
-                logger.info("买单距现价过远，撤单重挂：旧价={}，现价={}，间距={}，阈值={}，新价={}",
-                        pending.buyPrice, currentPrice, currentGridGap, threshold, newPrice);
+                logger.info("买单距现价过远，撤单重挂：旧价={}，现价={}，间距={}，撤单网格数={}，撤单线={}，新价={}",
+                        pending.buyPrice, currentPrice, currentGridGap, cancelGridCount, cancelBelow, newPrice);
                 submitAlarm("买单追价重挂",
-                        String.format("旧挂单价 %s，现价 %s，超过间距×1.5（%s），重挂至 %s",
-                                formatPrice(pending.buyPrice), formatPrice(currentPrice),
-                                formatPrice(threshold), formatPrice(newPrice)),
+                        String.format("旧挂单价 %s 低于撤单线 %s（现价 %s − %d×间距 %s），重挂至 %s",
+                                formatPrice(pending.buyPrice), formatPrice(cancelBelow),
+                                formatPrice(currentPrice), cancelGridCount, formatPrice(currentGridGap),
+                                formatPrice(newPrice)),
                         AlarmLevel.INFO);
                 placeLimitBuyOrder(newPrice);
             } catch (Exception e) {
@@ -1214,6 +1222,7 @@ public class AutoGridStrategy extends BaseStrategy {
         sb.append("<div>当前价：").append(formatPrice(currentPrice)).append("</div>");
         sb.append("<div>ATR：").append(formatPrice(currentAtr)).append("</div>");
         sb.append("<div>网格间距：").append(formatPrice(currentGridGap)).append("</div>");
+        sb.append("<div>撤单网格数：").append(cancelGridCount).append("</div>");
         sb.append("<div>待成交买单：").append(pendingBuyOrders.size()).append(" / 1 笔</div>");
         sb.append("<div>待成交卖单：").append(pendingSellOrders.size()).append(" 笔</div>");
         sb.append("<div>持仓待止盈：").append(openPositions.size())