diff --git a/kb_workflow/pipeline/config.py b/kb_workflow/pipeline/config.py
index 3422b5b..18c700b 100644
--- a/kb_workflow/pipeline/config.py
+++ b/kb_workflow/pipeline/config.py
@@ -62,6 +62,10 @@ class KBSettings(BaseSettings):
     overwrite_archives: bool = Field(
         default=False, description="覆盖已存在的归档文件（非交互模式）"
     )
+    enable_semantic_segmentation: bool = Field(
+        default=True,
+        description="启用 LLM 语义分段（默认启用）"
+    )
 
 
 @lru_cache