diff --git a/backend/app/core/logging.py b/backend/app/core/logging.py
index 0c5c758..85365d4 100644
--- a/backend/app/core/logging.py
+++ b/backend/app/core/logging.py
@@ -14,4 +14,22 @@ def configure_logging(log_level: str = "INFO") -> None:
         ],
         wrapper_class=structlog.make_filtering_bound_logger(level),
         cache_logger_on_first_use=True,
-    )
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+    )
+
+
+def setup_logging(log_level: str = "INFO") -> structlog.stdlib.BoundLogger:
+    """
+    配置并返回 structlog logger 实例
+    
+    Args:
+        log_level: 日志级别，默认 INFO
+        
+    Returns:
+        配置好的 logger 实例
+    """
+    configure_logging(log_level)
+    return structlog.get_logger()
+
+
+# 全局 logger 实例
+logger = structlog.get_logger()
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