diff --git a/backend/app/crypto_agent/executor/hyperliquid_executor.py b/backend/app/crypto_agent/executor/hyperliquid_executor.py
index 9b14f7c..9275c9e 100644
--- a/backend/app/crypto_agent/executor/hyperliquid_executor.py
+++ b/backend/app/crypto_agent/executor/hyperliquid_executor.py
@@ -22,7 +22,6 @@ class HyperliquidExecutor(BaseExecutor):
         try:
             symbol = decision.get('symbol', '').replace('USDT', '')
             action = decision.get('signal_action', decision.get('action'))  # buy/sell
-            margin = decision.get('margin', decision.get('quantity', 0))
             entry_price = decision.get('entry_price', current_price)
             stop_loss = decision.get('stop_loss')
             take_profit = decision.get('take_profit')
@@ -31,13 +30,20 @@ class HyperliquidExecutor(BaseExecutor):
             order_type, order_reason = self.decide_order_type(decision, current_price)
             logger.info(f"   订单类型: {order_reason}")
 
-            # 调整保证金（预留手续费）
+            # 获取账户状态
             account_state = self.hyperliquid.get_account_state()
             available = account_state.get('available_balance', 0)
-            adjusted_margin = self.calculate_effective_margin(available, margin)
+            account_value = account_state.get('account_value', 0)
+
+            # 仓位价值 = 1x 账户价值，所需保证金 = 账户价值 / 杠杆
+            leverage = min(decision.get('leverage', 10), 10)
+            target_position_value = account_value  # 1倍账户价值
+            margin_needed = target_position_value / leverage if leverage > 0 else 0
+
+            # 预留手续费并限制在可用余额内
+            adjusted_margin = self.calculate_effective_margin(available, margin_needed)
 
             # 计算仓位大小
-            leverage = min(decision.get('leverage', 10), 10)
             position_size = self._calculate_position_size(symbol, adjusted_margin, entry_price, leverage)
 
             if position_size <= 0:
@@ -78,7 +84,27 @@ class HyperliquidExecutor(BaseExecutor):
 
             logger.info(f"   ✅ 开仓成功: {symbol} {position_size} @ ${order_type}")
 
-            # 发送飞书通知
+            # 成交后设置止盈止损（Hyperliquid 不支持下单时设置 TP/SL）
+            # 必须在飞书通知之前设置，避免通知异常导致止盈止损跳过
+            if stop_loss or take_profit:
+                try:
+                    tp_sl_result = self.hyperliquid.set_tp_sl(
+                        symbol=symbol,
+                        is_long=is_buy,
+                        size=position_size,
+                        tp_price=take_profit,
+                        sl_price=stop_loss
+                    )
+                    if not tp_sl_result.get('success'):
+                        logger.warning(f"   ⚠️  止盈止损设置失败: {tp_sl_result.get('error', tp_sl_result.get('message'))}")
+                        result['tp_sl_warning'] = tp_sl_result.get('error', tp_sl_result.get('message'))
+                    else:
+                        logger.info(f"   ✅ 止盈止损已设置: TP={take_profit}, SL={stop_loss}")
+                except Exception as tp_sl_err:
+                    logger.error(f"   ⚠️  止盈止损设置异常: {tp_sl_err}")
+                    result['tp_sl_warning'] = str(tp_sl_err)
+
+            # 发送飞书通知（在止盈止损之后，通知失败不影响交易结果）
             await self.send_execution_notification(
                 operation='OPEN',
                 symbol=symbol,
@@ -94,22 +120,6 @@ class HyperliquidExecutor(BaseExecutor):
                 }
             )
 
-            # 成交后设置止盈止损（Hyperliquid 不支持下单时设置 TP/SL）
-            # 市价单已成交直接设置；限价单（resting）也先设置，等成交后生效
-            if stop_loss or take_profit:
-                tp_sl_result = self.hyperliquid.set_tp_sl(
-                    symbol=symbol,
-                    is_long=is_buy,
-                    size=position_size,
-                    tp_price=take_profit,
-                    sl_price=stop_loss
-                )
-                if not tp_sl_result.get('success'):
-                    logger.warning(f"   ⚠️  止盈止损设置失败: {tp_sl_result.get('error', tp_sl_result.get('message'))}")
-                    result['tp_sl_warning'] = tp_sl_result.get('error', tp_sl_result.get('message'))
-                else:
-                    logger.info(f"   ✅ 止盈止损已设置: TP={take_profit}, SL={stop_loss}")
-
             return result
 
         except Exception as e: