diff --git a/backend/app/api/hyperliquid.py b/backend/app/api/hyperliquid.py
index 057fe30..13c9f4b 100644
--- a/backend/app/api/hyperliquid.py
+++ b/backend/app/api/hyperliquid.py
@@ -136,7 +136,7 @@ async def get_positions(
                 "size": abs(size),
                 "entry_price": pos["entry_price"],
                 "unrealized_pnl": pos["unrealized_pnl"],
-                "leverage": pos.get("leverage", {}).get("value", "N/A"),
+                "leverage": (pos.get("leverage") or {}).get("value", "N/A") if isinstance(pos.get("leverage"), dict) else (pos.get("leverage") or "N/A"),
                 "liquidation_price": pos.get("liquidation_price"),
                 "take_profit": tp_sl.get("take_profit"),
                 "stop_loss": tp_sl.get("stop_loss"),
diff --git a/backend/app/crypto_agent/crypto_agent.py b/backend/app/crypto_agent/crypto_agent.py
index 6d2603d..50a9adc 100644
--- a/backend/app/crypto_agent/crypto_agent.py
+++ b/backend/app/crypto_agent/crypto_agent.py
@@ -928,7 +928,11 @@ class CryptoAgent:
             # 转换持仓格式
             position_list = []
             for pos in hl_state["positions"]:
+                if not isinstance(pos, dict):
+                    continue
                 position_data = pos.get("position", {})
+                if not isinstance(position_data, dict):
+                    continue
                 coin = position_data.get("coin")
                 size = float(position_data.get("szi", 0))
 
diff --git a/backend/app/services/hyperliquid_trading_service.py b/backend/app/services/hyperliquid_trading_service.py
index bd0a40b..cf2e89d 100644
--- a/backend/app/services/hyperliquid_trading_service.py
+++ b/backend/app/services/hyperliquid_trading_service.py
@@ -355,6 +355,9 @@ class HyperliquidTradingService:
                     continue
 
                 order_type = order.get("order_type", {})
+                # 防御性检查：确保 order_type 是 dict
+                if not isinstance(order_type, dict):
+                    continue
 
                 # 止盈：限价单
                 if "limit" in order_type and order["price"] > 0:
@@ -583,7 +586,7 @@ class HyperliquidTradingService:
                     "size": size,  # 正数=多头，负数=空头
                     "entry_price": float(position_data.get("entryPx", 0)),
                     "unrealized_pnl": float(position_data.get("unrealizedPnl", 0)),
-                    "leverage": position_data.get("leverage", {}).get("value"),
+                    "leverage": position_data.get("leverage", {}).get("value") if isinstance(position_data.get("leverage"), dict) else position_data.get("leverage"),
                     "liquidation_price": position_data.get("liquidationPx"),
                     "stop_loss": tp_sl_prices.get("stop_loss"),
                     "take_profit": tp_sl_prices.get("take_profit"),