diff --git a/api/core/rag/datasource/vdb/milvus/milvus_vector.py b/api/core/rag/datasource/vdb/milvus/milvus_vector.py
index c72797c34a..7cdb2d3a99 100644
--- a/api/core/rag/datasource/vdb/milvus/milvus_vector.py
+++ b/api/core/rag/datasource/vdb/milvus/milvus_vector.py
@@ -1,6 +1,6 @@
 import json
 import logging
-from typing import Any
+from typing import Any, TypedDict
 
 from packaging import version
 from pydantic import BaseModel, model_validator
@@ -20,6 +20,15 @@ from models.dataset import Dataset
 logger = logging.getLogger(__name__)
 
 
+class MilvusParamsDict(TypedDict):
+    uri: str
+    token: str | None
+    user: str | None
+    password: str | None
+    db_name: str
+    analyzer_params: str | None
+
+
 class MilvusConfig(BaseModel):
     """
     Configuration class for Milvus connection.
@@ -50,11 +59,11 @@ class MilvusConfig(BaseModel):
                 raise ValueError("config MILVUS_PASSWORD is required")
         return values
 
-    def to_milvus_params(self):
+    def to_milvus_params(self) -> MilvusParamsDict:
         """
         Convert the configuration to a dictionary of Milvus connection parameters.
         """
-        return {
+        result: MilvusParamsDict = {
             "uri": self.uri,
             "token": self.token,
             "user": self.user,
@@ -62,6 +71,7 @@ class MilvusConfig(BaseModel):
             "db_name": self.database,
             "analyzer_params": self.analyzer_params,
         }
+        return result
 
 
 class MilvusVector(BaseVector):
diff --git a/api/core/rag/datasource/vdb/tencent/tencent_vector.py b/api/core/rag/datasource/vdb/tencent/tencent_vector.py
index c6836d9cf9..2f26d6fff3 100644
--- a/api/core/rag/datasource/vdb/tencent/tencent_vector.py
+++ b/api/core/rag/datasource/vdb/tencent/tencent_vector.py
@@ -1,7 +1,7 @@
 import json
 import logging
 import math
-from typing import Any
+from typing import Any, TypedDict
 
 from pydantic import BaseModel
 from tcvdb_text.encoder import BM25Encoder  # type: ignore
@@ -23,6 +23,13 @@ from models.dataset import Dataset
 logger = logging.getLogger(__name__)
 
 
+class TencentParamsDict(TypedDict):
+    url: str
+    username: str | None
+    key: str | None
+    timeout: float
+
+
 class TencentConfig(BaseModel):
     url: str
     api_key: str | None = None
@@ -36,8 +43,14 @@ class TencentConfig(BaseModel):
     max_upsert_batch_size: int = 128
     enable_hybrid_search: bool = False  # Flag to enable hybrid search
 
-    def to_tencent_params(self):
-        return {"url": self.url, "username": self.username, "key": self.api_key, "timeout": self.timeout}
+    def to_tencent_params(self) -> TencentParamsDict:
+        result: TencentParamsDict = {
+            "url": self.url,
+            "username": self.username,
+            "key": self.api_key,
+            "timeout": self.timeout,
+        }
+        return result
 
 
 bm25 = BM25Encoder.default("zh")