diff --git a/src/client_v2/document_index.cc b/src/client_v2/document_index.cc
index 9408ad43d..f37e67245 100644
--- a/src/client_v2/document_index.cc
+++ b/src/client_v2/document_index.cc
@@ -131,10 +131,15 @@ void SendDocumentAdd(DocumentAddOptions const& opt) {
   }
   // col6 bool
   {
-    if (opt.document_bool == "true" || opt.document_bool == "false") {
+    if (opt.document_bool == "true") {
       dingodb::pb::common::DocumentValue document_value1;
       document_value1.set_field_type(dingodb::pb::common::ScalarFieldType::BOOL);
-      document_value1.mutable_field_value()->set_string_data(opt.document_bool);
+      document_value1.mutable_field_value()->set_bool_data(true);
+      (*document_data)["col6"] = document_value1;
+    } else if (opt.document_bool == "false") {
+      dingodb::pb::common::DocumentValue document_value1;
+      document_value1.set_field_type(dingodb::pb::common::ScalarFieldType::BOOL);
+      document_value1.mutable_field_value()->set_bool_data(false);
       (*document_data)["col6"] = document_value1;
     }
   }
diff --git a/src/document/document_index.cc b/src/document/document_index.cc
index 71eabfb16..ef972e969 100644
--- a/src/document/document_index.cc
+++ b/src/document/document_index.cc
@@ -269,7 +269,11 @@ butil::Status DocumentIndex::Add(const std::vector<pb::common::DocumentWithId>&
           break;
         case pb::common::ScalarFieldType::BOOL:
           bool_column_names.push_back(field_name);
-          bool_column_docs.push_back(document_value.field_value().string_data());
+          if (document_value.field_value().bool_data()) {
+            bool_column_docs.push_back("true");
+          } else {
+            bool_column_docs.push_back("false");
+          }
           break;
         default:
           std::string err_msg =