diff --git a/README.md b/README.md
index 950c5c5a..dd570608 100644
--- a/README.md
+++ b/README.md
@@ -799,6 +799,7 @@ if __name__ == "__main__":
 | **addon\_params**                            | `dict` | Additional parameters, e.g., `{"example_number": 1, "language": "Simplified Chinese", "entity_types": ["organization", "person", "geo", "event"], "insert_batch_size": 10}`: sets example limit, output language, and batch size for document processing                                                                                                                                                                                                                                                                                                                                                                                                                            | `example_number: all examples, language: English, insert_batch_size: 10`                                    |
 | **convert\_response\_to\_json\_func**        | `callable` | Not used                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                            | `convert_response_to_json`                                                                                  |
 | **embedding\_cache\_config**                 | `dict` | Configuration for question-answer caching. Contains three parameters:<br>- `enabled`: Boolean value to enable/disable cache lookup functionality. When enabled, the system will check cached responses before generating new answers.<br>- `similarity_threshold`: Float value (0-1), similarity threshold. When a new question's similarity with a cached question exceeds this threshold, the cached answer will be returned directly without calling the LLM.<br>- `use_llm_check`: Boolean value to enable/disable LLM similarity verification. When enabled, LLM will be used as a secondary check to verify the similarity between questions before returning cached answers. | Default: `{"enabled": False, "similarity_threshold": 0.95, "use_llm_check": False}`                         |
+|**log\_dir**                                  | `str`  | Directory to store logs.                                                                                                                   | `./`                                                                                                    |
 
 ### Error Handling
 
diff --git a/lightrag/lightrag.py b/lightrag/lightrag.py
index f83c9e38..42e6e9cc 100644
--- a/lightrag/lightrag.py
+++ b/lightrag/lightrag.py
@@ -126,8 +126,10 @@ class LightRAG:
     vector_storage: str = field(default="NanoVectorDBStorage")
     graph_storage: str = field(default="NetworkXStorage")
 
+    # logging
     current_log_level = logger.level
     log_level: str = field(default=current_log_level)
+    log_dir: str = field(default=os.getcwd())
 
     # text chunking
     chunk_token_size: int = 1200
@@ -182,10 +184,11 @@ class LightRAG:
     chunking_func_kwargs: dict = field(default_factory=dict)
 
     def __post_init__(self):
-        log_file = os.path.join("lightrag.log")
+        os.makedirs(self.log_dir, exist_ok=True)
+        log_file = os.path.join(self.log_dir, "lightrag.log")
         set_logger(log_file)
-        logger.setLevel(self.log_level)
 
+        logger.setLevel(self.log_level)
         logger.info(f"Logger initialized for working directory: {self.working_dir}")
         if not os.path.exists(self.working_dir):
             logger.info(f"Creating working directory {self.working_dir}")