diff --git a/README.md b/README.md
index 80a7bed..e5f554c 100644
--- a/README.md
+++ b/README.md
@@ -14,8 +14,10 @@
    - Windows：在开始菜单搜索 “PowerShell” 或 “Windows Terminal” 并打开。
    - 使用 `cd` 切换到项目目录，例如：
      ```bash
-     cd ~/Desktop/ritmex-bot           # macOS / Linux
-     cd C:\Users\用户名\Desktop\ritmex-bot   # Windows
+     # macOS / Linux
+     cd ~/Desktop/ritmex-bot  
+     # Windows         
+     cd C:\Users\用户名\Desktop\ritmex-bot   
      ```
 3. **安装 [Bun](https://bun.com) ≥ 1.2**
    - macOS / Linux：
diff --git a/src/core/maker-engine.ts b/src/core/maker-engine.ts
index 0fb1218..8f7ee8b 100644
--- a/src/core/maker-engine.ts
+++ b/src/core/maker-engine.ts
@@ -54,6 +54,7 @@ export class MakerEngine {
   private readonly locks: OrderLockMap = {};
   private readonly timers: OrderTimerMap = {};
   private readonly pending: OrderPendingMap = {};
+  private readonly pendingCancelOrders = new Set<number>();
 
   private readonly tradeLog: ReturnType<typeof createTradeLog>;
   private readonly listeners = new Map<MakerEvent, Set<MakerListener>>();
@@ -121,6 +122,12 @@ export class MakerEngine {
       this.openOrders = Array.isArray(orders)
         ? orders.filter((order) => order.type !== "MARKET" && order.symbol === this.config.symbol)
         : [];
+      const currentIds = new Set(this.openOrders.map((order) => order.orderId));
+      for (const id of Array.from(this.pendingCancelOrders)) {
+        if (!currentIds.has(id)) {
+          this.pendingCancelOrders.delete(id);
+        }
+      }
       this.emitUpdate();
     });
 
@@ -214,6 +221,9 @@ export class MakerEngine {
         continue;
       }
       const reduceOnly = order.reduceOnly === true;
+      if (this.pendingCancelOrders.has(order.orderId)) {
+        continue;
+      }
       const matchedIndex = targets.findIndex((target, index) => {
         if (!unmatched.has(index)) return false;
         if (target.side !== order.side) return false;
@@ -228,14 +238,17 @@ export class MakerEngine {
     }
 
     for (const order of toCancel) {
+      this.pendingCancelOrders.add(order.orderId);
       try {
         await this.exchange.cancelOrder({ symbol: this.config.symbol, orderId: order.orderId });
         this.tradeLog.push("order", `撤销不匹配订单 ${order.side} @ ${order.price} reduceOnly=${order.reduceOnly}`);
       } catch (error) {
         if (isUnknownOrderError(error)) {
           this.tradeLog.push("order", "撤销时发现订单已被成交/取消，忽略");
+          this.pendingCancelOrders.delete(order.orderId);
         } else {
           this.tradeLog.push("error", `撤销订单失败: ${String(error)}`);
+          this.pendingCancelOrders.delete(order.orderId);
         }
       }
     }
@@ -303,13 +316,17 @@ export class MakerEngine {
   private async flushOrders(): Promise<void> {
     if (!this.openOrders.length) return;
     for (const order of this.openOrders) {
+      if (this.pendingCancelOrders.has(order.orderId)) continue;
+      this.pendingCancelOrders.add(order.orderId);
       try {
         await this.exchange.cancelOrder({ symbol: this.config.symbol, orderId: order.orderId });
       } catch (error) {
         if (isUnknownOrderError(error)) {
           this.tradeLog.push("order", "订单已不存在，撤销跳过");
+          this.pendingCancelOrders.delete(order.orderId);
         } else {
           this.tradeLog.push("error", `撤销订单失败: ${String(error)}`);
+          this.pendingCancelOrders.delete(order.orderId);
         }
       }
     }
diff --git a/src/core/trend-engine.ts b/src/core/trend-engine.ts
index 5086df2..66182b4 100644
--- a/src/core/trend-engine.ts
+++ b/src/core/trend-engine.ts
@@ -78,6 +78,8 @@ export class TrendEngine {
   private sessionQuoteVolume = 0;
   private prevPositionAmt = 0;
   private initializedPosition = false;
+  private cancelAllRequested = false;
+  private readonly pendingCancelOrders = new Set<number>();
 
   private readonly listeners = new Map<TrendEngineEvent, Set<TrendEngineListener>>();
 
@@ -131,6 +133,15 @@ export class TrendEngine {
       this.openOrders = Array.isArray(orders)
         ? orders.filter((order) => order.type !== "MARKET" && order.symbol === this.config.symbol)
         : [];
+      const currentIds = new Set(this.openOrders.map((order) => order.orderId));
+      for (const id of Array.from(this.pendingCancelOrders)) {
+        if (!currentIds.has(id)) {
+          this.pendingCancelOrders.delete(id);
+        }
+      }
+      if (this.openOrders.length === 0 || this.pendingCancelOrders.size === 0) {
+        this.cancelAllRequested = false;
+      }
       this.emitUpdate();
     });
     this.exchange.watchDepth(this.config.symbol, (depth) => {
@@ -210,14 +221,17 @@ export class TrendEngine {
       this.lastPrice = currentPrice;
       return;
     }
-    if (this.openOrders.length > 0) {
+    if (this.openOrders.length > 0 && !this.cancelAllRequested) {
       try {
         await this.exchange.cancelAllOrders({ symbol: this.config.symbol });
+        this.cancelAllRequested = true;
       } catch (err) {
         if (isUnknownOrderError(err)) {
           this.tradeLog.push("order", "撤单时部分订单已不存在，忽略");
+          this.cancelAllRequested = true;
         } else {
           this.tradeLog.push("error", `撤销挂单失败: ${String(err)}`);
+          this.cancelAllRequested = false;
         }
       }
     }
@@ -315,6 +329,7 @@ export class TrendEngine {
           const orderIdList = this.openOrders.map((order) => order.orderId);
           try {
             await this.exchange.cancelOrders({ symbol: this.config.symbol, orderIdList });
+            orderIdList.forEach((id) => this.pendingCancelOrders.add(id));
           } catch (err) {
             if (isUnknownOrderError(err)) {
               this.tradeLog.push("order", "止损前撤单发现订单已不存在");
diff --git a/src/ui/MakerApp.tsx b/src/ui/MakerApp.tsx
index 8732574..4c1a88d 100644
--- a/src/ui/MakerApp.tsx
+++ b/src/ui/MakerApp.tsx
@@ -137,9 +137,6 @@ export function MakerApp({ onExit }: MakerAppProps) {
               <Text>
                 浮动盈亏: {formatNumber(snapshot.pnl, 4)} USDT ｜ 账户未实现盈亏: {formatNumber(snapshot.accountUnrealized, 4)} USDT
               </Text>
-              <Text>
-                累计成交量: {formatNumber(snapshot.sessionVolume, 2)} USDT
-              </Text>
             </>
           ) : (
             <Text color="gray">当前无持仓</Text>
@@ -152,6 +149,9 @@ export function MakerApp({ onExit }: MakerAppProps) {
           ) : (
             <Text color="gray">暂无目标挂单</Text>
           )}
+          <Text>
+            累计成交量: {formatNumber(snapshot.sessionVolume, 2)} USDT
+          </Text>
         </Box>
       </Box>