diff --git a/src/Luban.Job.Cfg/Source/Generate/CppCodeBinRender.cs b/src/Luban.Job.Cfg/Source/Generate/CppCodeBinRender.cs
index 454d6e2..e1fc6bb 100644
--- a/src/Luban.Job.Cfg/Source/Generate/CppCodeBinRender.cs
+++ b/src/Luban.Job.Cfg/Source/Generate/CppCodeBinRender.cs
@@ -278,6 +278,12 @@ namespace {{x.top_module}}
 
         {{~ for field in type.export_fields ~}}
         {{cpp_deserialize '_buf' field.cpp_style_name field.ctype}}
+        {{~if field.index_field ~}}
+        for(auto& _v : this->{{field.cpp_style_name}})
+        { 
+            {{field.cpp_style_name}}_Index.insert({_v->{{field.index_field.cpp_style_name}}, _v});
+        }
+        {{~end~}}
         {{~end~}}
 
         return true;