diff --git a/api/apps/sdk/dify_retrieval.py b/api/apps/sdk/dify_retrieval.py
index 0e80b4587..446d4d74a 100644
--- a/api/apps/sdk/dify_retrieval.py
+++ b/api/apps/sdk/dify_retrieval.py
@@ -24,7 +24,7 @@ from api.db.services.llm_service import LLMBundle
 from api import settings
 from api.utils.api_utils import validate_request, build_error_result, apikey_required
 from rag.app.tag import label_question
-from api.db.services.dialog_service import meta_filter
+from api.db.services.dialog_service import meta_filter, convert_conditions
 
 
 @manager.route('/dify/retrieval', methods=['POST'])  # noqa: F821
@@ -101,19 +101,4 @@ def retrieval(tenant_id):
         logging.exception(e)
         return build_error_result(message=str(e), code=settings.RetCode.SERVER_ERROR)
 
-def convert_conditions(metadata_condition):
-    if metadata_condition is None:
-        metadata_condition = {}
-    op_mapping = {
-        "is": "=",
-        "not is": "≠"
-    }
-    return [
-    {
-        "op": op_mapping.get(cond["comparison_operator"], cond["comparison_operator"]),
-        "key": cond["name"],
-        "value": cond["value"]
-    }
-    for cond in metadata_condition.get("conditions", [])
-]
 
diff --git a/api/apps/sdk/doc.py b/api/apps/sdk/doc.py
index 50e6f7bba..5009b6fee 100644
--- a/api/apps/sdk/doc.py
+++ b/api/apps/sdk/doc.py
@@ -35,8 +35,7 @@ from api.db.services.knowledgebase_service import KnowledgebaseService
 from api.db.services.llm_service import LLMBundle
 from api.db.services.tenant_llm_service import TenantLLMService
 from api.db.services.task_service import TaskService, queue_tasks
-from api.db.services.dialog_service import meta_filter
-from api.apps.sdk.dify_retrieval import convert_conditions
+from api.db.services.dialog_service import meta_filter, convert_conditions
 from api.utils.api_utils import check_duplicate_ids, construct_json_result, get_error_data_result, get_parser_config, get_result, server_error_response, token_required
 from rag.app.qa import beAdoc, rmPrefix
 from rag.app.tag import label_question
diff --git a/api/db/services/dialog_service.py b/api/db/services/dialog_service.py
index b56459a56..3855c1ded 100644
--- a/api/db/services/dialog_service.py
+++ b/api/db/services/dialog_service.py
@@ -21,11 +21,9 @@ from copy import deepcopy
 from datetime import datetime
 from functools import partial
 from timeit import default_timer as timer
-
 import trio
 from langfuse import Langfuse
 from peewee import fn
-
 from agentic_reasoning import DeepResearcher
 from api import settings
 from api.db import LLMType, ParserType, StatusEnum
@@ -255,6 +253,23 @@ def repair_bad_citation_formats(answer: str, kbinfos: dict, idx: set):
     return answer, idx
 
 
+def convert_conditions(metadata_condition):
+    if metadata_condition is None:
+        metadata_condition = {}
+    op_mapping = {
+        "is": "=",
+        "not is": "≠"
+    }
+    return [
+    {
+        "op": op_mapping.get(cond["comparison_operator"], cond["comparison_operator"]),
+        "key": cond["name"],
+        "value": cond["value"]
+    }
+    for cond in metadata_condition.get("conditions", [])
+]
+
+
 def meta_filter(metas: dict, filters: list[dict]):
     doc_ids = set([])