diff --git a/services/docreader/src/parser/base_parser.py b/services/docreader/src/parser/base_parser.py
index e12897bee..73dc701a4 100644
--- a/services/docreader/src/parser/base_parser.py
+++ b/services/docreader/src/parser/base_parser.py
@@ -1042,14 +1042,6 @@ class BaseParser(ABC):
         Returns:
             Processed Chunk object
         """
-        # Set request ID context in the asynchronous task
-        try:
-            if current_request_id:
-                from utils.request import set_request_id
-                set_request_id(current_request_id)
-                logger.info(f"Chunk processing task #{chunk_idx+1} setting request ID: {current_request_id}")
-        except Exception as e:
-            logger.warning(f"Failed to set request ID in Chunk processing task: {str(e)}")
             
         logger.info(f"Starting to process images in Chunk #{chunk_idx+1}/{total_chunks}")
         
@@ -1146,7 +1138,7 @@ class BaseParser(ABC):
         # Create and run all Chunk concurrent processing tasks
         async def process_all_chunks():
             # Set max concurrency, reduce concurrency to avoid resource contention
-            max_concurrency = min(self.max_concurrent_tasks, 5)  # Reduce concurrency
+            max_concurrency = min(self.max_concurrent_tasks, 1)  # Reduce concurrency
             # Use semaphore to limit concurrency
             semaphore = asyncio.Semaphore(max_concurrency)