diff --git a/services/distributeddataservice/service/data_share/gaussdb_rd/src/interface/src/document_store.cpp b/services/distributeddataservice/service/data_share/gaussdb_rd/src/interface/src/document_store.cpp
index 5d9f8a14b53af7255993e836d44449f04be463ca..43a459ed64cb386a9c9ef5c34c99eff152393cef 100644
--- a/services/distributeddataservice/service/data_share/gaussdb_rd/src/interface/src/document_store.cpp
+++ b/services/distributeddataservice/service/data_share/gaussdb_rd/src/interface/src/document_store.cpp
@@ -330,6 +330,10 @@ int GetUpsertRePlaceData(ResultSet &resultSet, JsonObject &documentObj, bool isR
     int errCode = resultSet.GetValue(valStr);
     if (errCode != E_OK || isReplace) {
         valStr = documentObj.Print(); // If cant not find data, insert it.
+        if (valStr.length() >= JSON_LENS_MAX) {
+            GLOGE("document's length is too long");
+            return -E_OVER_LIMIT;
+        }
         return E_OK;
     }
     if (errCode != E_OK && errCode != -E_NOT_FOUND) {
diff --git a/services/distributeddataservice/service/data_share/gaussdb_rd/test/unittest/api/documentdb_data_test.cpp b/services/distributeddataservice/service/data_share/gaussdb_rd/test/unittest/api/documentdb_data_test.cpp
index 1ea370b55ac52d7a3030dae6a46ad713cfc50cca..7c08e72d40413b5b1660727c33c5d00f1ef4b05f 100644
--- a/services/distributeddataservice/service/data_share/gaussdb_rd/test/unittest/api/documentdb_data_test.cpp
+++ b/services/distributeddataservice/service/data_share/gaussdb_rd/test/unittest/api/documentdb_data_test.cpp
@@ -32,7 +32,7 @@ namespace {
 std::string g_path = "./document.db";
 GRD_DB *g_db = nullptr;
 const char *g_coll = "student";
-
+constexpr int JSON_LENS_MAX = 1024 * 1024;
 class DocumentDBDataTest : public testing::Test {
 public:
     static void SetUpTestCase(void);
@@ -174,8 +174,12 @@ HWTEST_F(DocumentDBDataTest, UpsertDataTest008, TestSize.Level0)
 HWTEST_F(DocumentDBDataTest, UpsertDataTest009, TestSize.Level0)
 {
     std::string filter = R""({"_id":"abcde"})"";
-    std::string document = R"({"field1": ")" + string(1024 * 1024 + 1, 'a') + "\"}";
-    EXPECT_EQ(GRD_UpsertDoc(g_db, g_coll, filter.c_str(), document.c_str(), GRD_DOC_REPLACE), GRD_OVER_LIMIT);
+    std::string head = R"({"field1": ")";
+    std::string document =
+        head + string(JSON_LENS_MAX - filter.size() - head.size() - 1, 'a') + "\"}"; // 13 is {"field1": size
+    EXPECT_EQ(GRD_UpsertDoc(g_db, g_coll, filter.c_str(), document.c_str(), GRD_DOC_APPEND), 1);
+    std::string document2 = head + string(JSON_LENS_MAX - filter.size() - head.size(), 'a') + "\"}";
+    EXPECT_EQ(GRD_UpsertDoc(g_db, g_coll, filter.c_str(), document2.c_str(), GRD_DOC_REPLACE), GRD_OVER_LIMIT);
 }
 
 HWTEST_F(DocumentDBDataTest, UpsertDataTest010, TestSize.Level0)