diff --git a/backend/app/crypto_agent/crypto_agent.py b/backend/app/crypto_agent/crypto_agent.py
index 4638397..fbf5080 100644
--- a/backend/app/crypto_agent/crypto_agent.py
+++ b/backend/app/crypto_agent/crypto_agent.py
@@ -1435,7 +1435,15 @@ class CryptoAgent:
 
             # 决策信息
             decision_type = decision.get('decision', 'HOLD')
-            decision_reasoning = decision.get('reasoning', reason)
+            decision_reasoning = decision.get('reasoning', '')
+
+            # 如果有外部传入的 reason（订单创建失败的具体原因），优先使用
+            if reason:
+                final_reason = reason
+            elif decision_reasoning:
+                final_reason = decision_reasoning
+            else:
+                final_reason = "未知原因"
 
             # 方向图标
             action = best_signal.get('action', 'wait')
@@ -1461,7 +1469,7 @@ class CryptoAgent:
                 f"**当前价格**: ${current_price:,.2f}",
                 f"",
                 f"⚠️ **未执行原因**:",
-                f"{decision_reasoning}",
+                f"{final_reason}",
             ]
 
             content = "\n".join(content_parts)
@@ -1473,7 +1481,7 @@ class CryptoAgent:
                 message = f"{title}\n\n{content}"
                 await self.telegram.send_message(message)
 
-            logger.info(f"   📤 已发送信号未执行通知: {decision_type} - {decision_reasoning[:50]}")
+            logger.info(f"   📤 已发送信号未执行通知: {decision_type} - {final_reason[:50]}")
 
         except Exception as e:
             logger.warning(f"发送信号未执行通知失败: {e}")
diff --git a/backend/app/services/paper_trading_service.py b/backend/app/services/paper_trading_service.py
index d4930b6..98a4f73 100644
--- a/backend/app/services/paper_trading_service.py
+++ b/backend/app/services/paper_trading_service.py
@@ -161,7 +161,9 @@ class PaperTradingService:
         # 1. 检查总订单数（持仓+挂单）是否超过最大限制
         total_orders = len(self.active_orders)
         if total_orders >= self.max_orders:
-            logger.info(f"订单限制: 已达到最大订单数 {self.max_orders}，跳过")
+            msg = f"已达到最大订单数限制 ({self.max_orders}个)，无法创建新订单"
+            logger.info(f"订单限制: {msg}，跳过")
+            result['message'] = msg
             return result
 
         # 2. 检查是否有接近的挂单（价格差距 < 1%）
@@ -176,13 +178,17 @@ class PaperTradingService:
         for pending in pending_orders:
             price_diff = abs(pending.entry_price - entry_price) / pending.entry_price
             if price_diff < 0.01:  # 价格差距小于 1%
-                logger.info(f"订单限制: {symbol} 已有接近的挂单 @ ${pending.entry_price:,.2f}，新信号 @ ${entry_price:,.2f}，跳过")
+                msg = f"已有接近的挂单 @ ${pending.entry_price:,.2f}（价格差距 {price_diff*100:.2f}%）"
+                logger.info(f"订单限制: {symbol} {msg}，新信号 @ ${entry_price:,.2f}，跳过")
+                result['message'] = msg
                 return result
 
         # 获取信号等级
         grade = signal.get('signal_grade') or signal.get('grade', 'D')
         if grade == 'D':
-            logger.info(f"D级信号不开仓: {signal.get('symbol')}")
+            msg = "D级信号，不符合开仓条件"
+            logger.info(f"{msg}: {signal.get('symbol')}")
+            result['message'] = msg
             return result
 
         # === 动态仓位计算 ===
@@ -200,7 +206,9 @@ class PaperTradingService:
             margin, position_value = self._calculate_dynamic_position(position_size, symbol)
 
         if margin <= 0:
-            logger.info(f"无可用保证金: {symbol} | 当前杠杆已达上限")
+            msg = f"保证金不足或已达杠杆上限（当前杠杆已达 {self.leverage}x）"
+            logger.info(f"{msg}: {symbol}")
+            result['message'] = msg
             return result
 
         quantity = position_value  # 订单数量（以 USDT 计价）