diff --git a/deeptutor/api/routers/knowledge.py b/deeptutor/api/routers/knowledge.py
index bd60ffee23..137a4c3c4f 100644
--- a/deeptutor/api/routers/knowledge.py
+++ b/deeptutor/api/routers/knowledge.py
@@ -1208,10 +1208,13 @@ async def update_graphrag_pipeline_config(payload: GraphRagConfigUpdate):
 
 
 class LightRagConfigUpdate(BaseModel):
-    """Partial update for LightRAG query knobs (omitted fields kept)."""
+    """Partial update for LightRAG query + indexing knobs (omitted fields kept)."""
 
     top_k: int | None = None
     response_type: str | None = None
+    max_concurrent_files: int | None = None
+    llm_model_max_async: int | None = None
+    entity_extract_max_gleaning: int | None = None
 
 
 @router.get("/rag-pipelines/lightrag/config")
diff --git a/deeptutor/services/config/runtime_settings.py b/deeptutor/services/config/runtime_settings.py
index 7940f4cd88..247d580f12 100644
--- a/deeptutor/services/config/runtime_settings.py
+++ b/deeptutor/services/config/runtime_settings.py
@@ -257,15 +257,20 @@
     "dynamic_community_selection": False,
 }
 
-# LightRAG retrieval knobs (HKUDS/LightRAG via RAG-Anything). ``top_k`` is the
-# number of entities/relations the query pulls; ``response_type`` mirrors
+# LightRAG retrieval + indexing knobs (HKUDS/LightRAG via RAG-Anything). ``top_k``
+# is the number of entities/relations the query pulls; ``response_type`` mirrors
 # GraphRAG's. These ride into ``QueryParam`` via the engine's aquery() call;
 # wiring is defensive (an older RAG-Anything that rejects a kwarg degrades to a
-# mode-only query).
+# mode-only query). ``max_concurrent_files`` maps to RAGAnythingConfig's batch
+# knob; ``llm_model_max_async`` / ``entity_extract_max_gleaning`` ride into
+# LightRAG's own constructor via RAGAnything's ``lightrag_kwargs`` passthrough.
 DEFAULT_LIGHTRAG_SETTINGS: dict[str, Any] = {
     "version": 1,
     "top_k": 60,
     "response_type": "Multiple Paragraphs",
+    "max_concurrent_files": 1,
+    "llm_model_max_async": 4,
+    "entity_extract_max_gleaning": 1,
 }
 
 IGNORE_PROCESS_OVERRIDES_ENV = "DEEPTUTOR_IGNORE_PROCESS_ENV_OVERRIDES"
@@ -782,6 +787,15 @@ def _normalize_lightrag(self, settings: dict[str, Any]) -> dict[str, Any]:
             "version": 1,
             "top_k": _coerce_clamped_int(settings.get("top_k"), 60, 1, 200),
             "response_type": self._normalize_response_type(settings.get("response_type")),
+            "max_concurrent_files": _coerce_clamped_int(
+                settings.get("max_concurrent_files"), 1, 1, 16
+            ),
+            "llm_model_max_async": _coerce_clamped_int(
+                settings.get("llm_model_max_async"), 4, 1, 32
+            ),
+            "entity_extract_max_gleaning": _coerce_clamped_int(
+                settings.get("entity_extract_max_gleaning"), 1, 0, 5
+            ),
         }
 
     def _normalize_document_parsing(self, settings: dict[str, Any]) -> dict[str, Any]:
diff --git a/deeptutor/services/rag/pipelines/lightrag/config.py b/deeptutor/services/rag/pipelines/lightrag/config.py
index 70e77f2aea..1b7e15faf0 100644
--- a/deeptutor/services/rag/pipelines/lightrag/config.py
+++ b/deeptutor/services/rag/pipelines/lightrag/config.py
@@ -86,6 +86,47 @@ def query_kwargs_from_settings() -> dict:
         return {}
 
 
+def indexing_kwargs_from_settings() -> dict:
+    """``RAGAnythingConfig`` batch-processing knobs from runtime settings.
+
+    Only ``max_concurrent_files`` is exposed for now (issue #640); the config
+    object accepts several other batch/context knobs we deliberately leave on
+    RAG-Anything's own defaults. Empty on any read error, so a bad settings
+    file falls back to RAG-Anything's built-in default of 1.
+    """
+    try:
+        from deeptutor.services.config import load_lightrag_settings
+
+        settings = load_lightrag_settings()
+        return {"max_concurrent_files": int(settings.get("max_concurrent_files", 1))}
+    except Exception:
+        return {}
+
+
+def lightrag_kwargs_from_settings() -> dict:
+    """Extra kwargs forwarded to LightRAG's own constructor via RAG-Anything's
+    ``lightrag_kwargs`` passthrough.
+
+    ``llm_model_max_async`` bounds how many concurrent LLM calls LightRAG's
+    internal priority queue issues (covers both query and entity-extraction
+    traffic, since both ride the same wrapped ``llm_model_func``).
+    ``entity_extract_max_gleaning`` controls how many extra extraction passes
+    LightRAG runs per chunk to recover entities/relations the first pass
+    missed. Empty on any read error, so a bad settings file falls back to
+    LightRAG's own built-in defaults.
+    """
+    try:
+        from deeptutor.services.config import load_lightrag_settings
+
+        settings = load_lightrag_settings()
+        return {
+            "llm_model_max_async": int(settings.get("llm_model_max_async", 4)),
+            "entity_extract_max_gleaning": int(settings.get("entity_extract_max_gleaning", 1)),
+        }
+    except Exception:
+        return {}
+
+
 def build_llm_model_func(*, io_bridge: OwnerLoopBridge | None = None):
     """Wrap DeepTutor's unified LLM callable for LightRAG.
 
@@ -190,6 +231,8 @@ async def request():
     "is_lightrag_available",
     "normalize_mode",
     "query_kwargs_from_settings",
+    "indexing_kwargs_from_settings",
+    "lightrag_kwargs_from_settings",
     "build_llm_model_func",
     "build_vision_model_func",
     "build_embedding_func",
diff --git a/deeptutor/services/rag/pipelines/lightrag/engine.py b/deeptutor/services/rag/pipelines/lightrag/engine.py
index 8bf237bda5..f2abcd4ee2 100644
--- a/deeptutor/services/rag/pipelines/lightrag/engine.py
+++ b/deeptutor/services/rag/pipelines/lightrag/engine.py
@@ -23,6 +23,8 @@
     build_embedding_func,
     build_llm_model_func,
     build_vision_model_func,
+    indexing_kwargs_from_settings,
+    lightrag_kwargs_from_settings,
     normalize_mode,
     query_kwargs_from_settings,
 )
@@ -39,13 +41,14 @@ def build_rag(working_dir: Path, *, io_bridge: OwnerLoopBridge | None = None) ->
     """
     from raganything import RAGAnything, RAGAnythingConfig
 
-    config = RAGAnythingConfig(working_dir=str(working_dir))
+    config = RAGAnythingConfig(working_dir=str(working_dir), **indexing_kwargs_from_settings())
     adapter_kwargs = {"io_bridge": io_bridge} if io_bridge is not None else {}
     rag = RAGAnything(
         config=config,
         llm_model_func=build_llm_model_func(**adapter_kwargs),
         vision_model_func=build_vision_model_func(**adapter_kwargs),
         embedding_func=build_embedding_func(**adapter_kwargs),
+        lightrag_kwargs=lightrag_kwargs_from_settings(),
     )
     # DeepTutor always feeds RAG-Anything a pre-parsed ``content_list`` (the
     # parse layer runs upstream via DeepTutor's own ParseService), so