diff --git a/env.example b/env.example
index f98648d2..6bac24ae 100644
--- a/env.example
+++ b/env.example
@@ -58,6 +58,8 @@ SUMMARY_LANGUAGE=English
 # FORCE_LLM_SUMMARY_ON_MERGE=6
 ### Max tokens for entity/relations description after merge
 # MAX_TOKEN_SUMMARY=500
+### Maximum number of entity extraction attempts for ambiguous content
+# ENTITY_EXTRACT_MAX_GLEANING=1
 
 ### Number of parallel processing documents(Less than MAX_ASYNC/2 is recommended)
 # MAX_PARALLEL_INSERT=2
diff --git a/lightrag/constants.py b/lightrag/constants.py
index f8345994..82451a36 100644
--- a/lightrag/constants.py
+++ b/lightrag/constants.py
@@ -7,6 +7,7 @@ consistency and makes maintenance easier.
 """
 
 # Default values for environment variables
+DEFAULT_MAX_GLEANING = 1
 DEFAULT_MAX_TOKEN_SUMMARY = 500
 DEFAULT_FORCE_LLM_SUMMARY_ON_MERGE = 6
 DEFAULT_WOKERS = 2
diff --git a/lightrag/lightrag.py b/lightrag/lightrag.py
index 2ca543b1..132075d6 100644
--- a/lightrag/lightrag.py
+++ b/lightrag/lightrag.py
@@ -22,6 +22,7 @@ from typing import (
     Dict,
 )
 from lightrag.constants import (
+    DEFAULT_MAX_GLEANING,
     DEFAULT_MAX_TOKEN_SUMMARY,
     DEFAULT_FORCE_LLM_SUMMARY_ON_MERGE,
 )
@@ -124,7 +125,9 @@ class LightRAG:
     # Entity extraction
     # ---
 
-    entity_extract_max_gleaning: int = field(default=1)
+    entity_extract_max_gleaning: int = field(
+        default=get_env_value("MAX_GLEANING", DEFAULT_MAX_GLEANING, int)
+    )
     """Maximum number of entity extraction attempts for ambiguous content."""
 
     summary_to_max_tokens: int = field(