diff --git a/apps/common/chunk/impl/mark_chunk_handle.py b/apps/common/chunk/impl/mark_chunk_handle.py
index f86290a1f..9e5a66c0e 100644
--- a/apps/common/chunk/impl/mark_chunk_handle.py
+++ b/apps/common/chunk/impl/mark_chunk_handle.py
@@ -12,6 +12,7 @@ from typing import List
 from common.chunk.i_chunk_handle import IChunkHandle
 
 split_chunk_pattern = "！|。|\n|；|;"
+min_chunk_len = 20
 
 
 class MarkChunkHandle(IChunkHandle):
@@ -20,5 +21,17 @@ class MarkChunkHandle(IChunkHandle):
         for chunk in chunk_list:
             base_chunk = re.split(split_chunk_pattern, chunk)
             base_chunk = [chunk.strip() for chunk in base_chunk if len(chunk.strip()) > 0]
-            result = [*result, *base_chunk]
+            result_chunk = []
+            for c in base_chunk:
+                if len(result_chunk) == 0:
+                    result_chunk.append(c)
+                else:
+                    if len(result_chunk[-1]) < min_chunk_len:
+                        result_chunk[-1] = result_chunk[-1] + c
+                    else:
+                        if len(c) < min_chunk_len:
+                            result_chunk[-1] = result_chunk[-1] + c
+                        else:
+                            result_chunk.append(c)
+            result = [*result, *result_chunk]
         return result