diff --git a/backend/config_manager.py b/backend/config_manager.py
index 8d32153..8d52c93 100644
--- a/backend/config_manager.py
+++ b/backend/config_manager.py
@@ -634,7 +634,18 @@ class ConfigManager:
         if key in self._cache:
             return self._cache[key]
         
-        # 3. 从环境变量读取
+        # 3. 从全局策略配置读取（如果账号未设置）
+        # API密钥等敏感信息不走全局配置
+        if key not in ("BINANCE_API_KEY", "BINANCE_API_SECRET", "USE_TESTNET"):
+            try:
+                # GlobalStrategyConfigManager是单例，开销很小
+                global_val = GlobalStrategyConfigManager().get(key)
+                if global_val is not None:
+                    return global_val
+            except Exception:
+                pass
+
+        # 4. 从环境变量读取
         env_value = os.getenv(key)
         if env_value is not None:
             return env_value