diff --git a/.env.example b/.env.example
index 2b5c284c..835c1479 100644
--- a/.env.example
+++ b/.env.example
@@ -26,7 +26,7 @@
 ### Max async calls for LLM
 # MAX_ASYNC=4
 ### Optional Timeout for LLM
-# TIMEOUT=None  # Time out in seconds, None for infinite timeout
+# TIMEOUT=150  # Time out in seconds, None for infinite timeout
 
 ### Settings for RAG query
 # HISTORY_TURNS=3
diff --git a/lightrag/api/README.md b/lightrag/api/README.md
index d06a8d9e..86f18271 100644
--- a/lightrag/api/README.md
+++ b/lightrag/api/README.md
@@ -268,7 +268,7 @@ You can not change storage implementation selection after you add documents to L
 | --input-dir | ./inputs | Directory containing input documents |
 | --max-async | 4 | Maximum async operations |
 | --max-tokens | 32768 | Maximum token size |
-| --timeout | None | Timeout in seconds (useful when using slow AI). Use None for infinite timeout |
+| --timeout | 150 | Timeout in seconds. None for infinite timeout(not recommended) |
 | --log-level | INFO | Logging level (DEBUG, INFO, WARNING, ERROR, CRITICAL) |
 | --verbose | - | Verbose debug output (True, Flase) |
 | --key | None | API key for authentication. Protects lightrag server against unauthorized access |
diff --git a/lightrag/api/utils_api.py b/lightrag/api/utils_api.py
index e32cdc41..a78a6e93 100644
--- a/lightrag/api/utils_api.py
+++ b/lightrag/api/utils_api.py
@@ -148,6 +148,8 @@ def parse_args() -> argparse.Namespace:
     )
 
     def timeout_type(value):
+        if value is None:
+            return 150
         if value is None or value == "None":
             return None
         return int(value)