diff --git a/milvus/types/Data.ts b/milvus/types/Data.ts
index 1f7c26df..01ec069c 100644
--- a/milvus/types/Data.ts
+++ b/milvus/types/Data.ts
@@ -300,6 +300,7 @@ export interface SearchParam {
   group_by_field?: string; // group by field
   group_size?: number; // group size
   strict_group_size?: boolean; // if strict group size
+  hints?: string; // hints to improve milvus search performance
 }
 
 // old search api parameter type, deprecated
@@ -352,6 +353,7 @@ export interface SearchSimpleReq extends collectionNameReq {
   group_by_field?: string; // group by field
   group_size?: number; // group size
   strict_group_size?: boolean; // if strict group size
+  hints?: string; // hints to improve milvus search performance
   round_decimal?: number; // round decimal
   transformers?: OutputTransformers; // provide custom data transformer for specific data type like bf16 or f16 vectors
 }
diff --git a/milvus/utils/Format.ts b/milvus/utils/Format.ts
index abe5680c..7f05d09a 100644
--- a/milvus/utils/Format.ts
+++ b/milvus/utils/Format.ts
@@ -688,6 +688,9 @@ export const buildSearchParams = (
   if (data.group_size) {
     search_params.group_size = data.group_size;
   }
+  if (data.hints) {
+    search_params.hints = data.hints;
+  }
 
   return search_params;
 };