diff --git a/metagpt/logs.py b/metagpt/logs.py
index 90bac21aa..ebb741c28 100644
--- a/metagpt/logs.py
+++ b/metagpt/logs.py
@@ -14,9 +14,13 @@ from loguru import logger as _logger
 
 from metagpt.const import METAGPT_ROOT
 
+_print_level = "INFO"
 
 def define_log_level(print_level="INFO", logfile_level="DEBUG", name: str = None):
     """Adjust the log level to above level"""
+    global _print_level
+    _print_level = print_level
+
     current_date = datetime.now()
     formatted_date = current_date.strftime("%Y%m%d")
     log_name = f"{name}_{formatted_date}" if name else formatted_date  # name a log with prefix name
@@ -31,7 +35,8 @@ logger = define_log_level()
 
 
 def log_llm_stream(msg):
-    _llm_stream_log(msg)
+  if _print_level in ["DEBUG"]:
+        _llm_stream_log(msg)
 
 
 def set_llm_stream_logfunc(func):