diff --git a/services/distributeddataservice/service/data_share/gaussdb_rd_simple/src/common/src/json_common.cpp b/services/distributeddataservice/service/data_share/gaussdb_rd_simple/src/common/src/json_common.cpp
index 1ffc62831da4ed00391caa0074a3216b4162a8cd..6382a49ad4d6e57c15b3ca9eb2811b0d201fffe8 100644
--- a/services/distributeddataservice/service/data_share/gaussdb_rd_simple/src/common/src/json_common.cpp
+++ b/services/distributeddataservice/service/data_share/gaussdb_rd_simple/src/common/src/json_common.cpp
@@ -205,7 +205,8 @@ int JsonCommon::ParseNode(JsonObject &node, std::vector<std::string> singlePath,
                     tempParseName += priFieldName[j];
                 }
                 if (priFieldName[j] == '.' || j == priFieldName.size() - 1) {
-                    if (j > 0 && priFieldName[j] == '.' && priFieldName[j - 1] == '.') {
+                    if ((j > 0 && priFieldName[j] == '.' && priFieldName[j - 1] == '.') ||
+                        (priFieldName[j] == '.' && j == priFieldName.size() - 1)) {
                         return -E_INVALID_ARGS;
                     }
                     allFiledsName.emplace_back(tempParseName);
@@ -625,7 +626,7 @@ bool JsonCommon::JsonEqualJudge(JsonFieldPath &itemPath, const JsonObject &src,
             isMatchFlag = isEqual;
         }
         isAlreadyMatched = isMatchFlag;
-        return false; // Both leaf node, no need iterate
+        return false;                                            // Both leaf node, no need iterate
     } else if (srcItem.GetType() != item.GetType()) {
         if (srcItem.GetType() == JsonObject::Type::JSON_ARRAY) { // srcItem Type is ARRAY, item Type is not ARRAY
             bool isEqual = IsArrayMatch(srcItem, item, isAlreadyMatched);
@@ -637,7 +638,7 @@ bool JsonCommon::JsonEqualJudge(JsonFieldPath &itemPath, const JsonObject &src,
         isMatchFlag = false;
         return false; // Different node types, overwrite directly, skip child node
     }
-    return true; // Both array or object
+    return true;      // Both array or object
 }
 
 bool JsonCommon::IsJsonNodeMatch(const JsonObject &src, const JsonObject &target, int &errCode)
diff --git a/services/distributeddataservice/service/data_share/gaussdb_rd_simple/test/unittest/api/documentdb_data_test.cpp b/services/distributeddataservice/service/data_share/gaussdb_rd_simple/test/unittest/api/documentdb_data_test.cpp
index 87061275866c369688707735b8d6b4155d12f06a..faa10174431cf5db058bb3b64c9217a6eb8ec32f 100644
--- a/services/distributeddataservice/service/data_share/gaussdb_rd_simple/test/unittest/api/documentdb_data_test.cpp
+++ b/services/distributeddataservice/service/data_share/gaussdb_rd_simple/test/unittest/api/documentdb_data_test.cpp
@@ -351,4 +351,10 @@ HWTEST_F(DocumentDBDataTest, UpdateDataTest013, TestSize.Level0)
     int result = GRD_UpdateDoc(g_db, "GM_Sys", R""({})"", R""({})"", 0);
     EXPECT_EQ(result, GRD_INVALID_FORMAT);
 }
+
+HWTEST_F(DocumentDBDataTest, UpdateDataTest014, TestSize.Level0)
+{
+    int result = GRD_UpdateDoc(g_db, g_coll, R""({"abc.":1})"", R""({})"", 0);
+    EXPECT_EQ(result, GRD_INVALID_ARGS);
+}
 } // namespace
diff --git a/services/distributeddataservice/service/data_share/gaussdb_rd_simple/test/unittest/api/documentdb_find_test.cpp b/services/distributeddataservice/service/data_share/gaussdb_rd_simple/test/unittest/api/documentdb_find_test.cpp
index c1995432459de98356ca08c93f54f674ca7bd38c..05efa28edd17f0afb011897b9a5aac3d8b180e41 100644
--- a/services/distributeddataservice/service/data_share/gaussdb_rd_simple/test/unittest/api/documentdb_find_test.cpp
+++ b/services/distributeddataservice/service/data_share/gaussdb_rd_simple/test/unittest/api/documentdb_find_test.cpp
@@ -1561,4 +1561,13 @@ HWTEST_F(DocumentFindApiTest, DocumentFindApiTest061, TestSize.Level1)
     EXPECT_EQ(GRD_FreeValue(value), GRD_OK);
     EXPECT_EQ(GRD_FreeResultSet(resultSet), GRD_OK);
 }
-} // namespace
\ No newline at end of file
+
+HWTEST_F(DocumentFindApiTest, DocumentFindApiTest062, TestSize.Level1)
+{
+    const char *filter = R"({"abc123_.":1})";
+    GRD_ResultSet *resultSet = nullptr;
+    const char *projection = R"({"abc123_":1})";
+    Query query = { filter, projection };
+    EXPECT_EQ(GRD_FindDoc(g_db, COLLECTION_NAME, query, 1, &resultSet), GRD_INVALID_ARGS);
+}
+} // namespace
diff --git a/services/distributeddataservice/service/data_share/gaussdb_rd_simple/test/unittest/api/documentdb_insert_test.cpp b/services/distributeddataservice/service/data_share/gaussdb_rd_simple/test/unittest/api/documentdb_insert_test.cpp
index 957d29062d8809de60762fc6b403bc488c95573a..91cb510c126334a7272d21e9fa3e2be55c274a97 100644
--- a/services/distributeddataservice/service/data_share/gaussdb_rd_simple/test/unittest/api/documentdb_insert_test.cpp
+++ b/services/distributeddataservice/service/data_share/gaussdb_rd_simple/test/unittest/api/documentdb_insert_test.cpp
@@ -812,4 +812,10 @@ HWTEST_F(DocumentInsertApiTest, DocumentInsertApiTest044, TestSize.Level1)
     EXPECT_EQ(GRD_InsertDoc(g_db, RIGHT_COLLECTION_NAME, document1, 0), GRD_OK);
     EXPECT_EQ(GRD_InsertDoc(g_db, RIGHT_COLLECTION_NAME, document2, 0), GRD_DATA_CONFLICT);
 }
-} // namespace
\ No newline at end of file
+
+HWTEST_F(DocumentInsertApiTest, DocumentInsertApiTest045, TestSize.Level1)
+{
+    const char *document1 = R""({"_id":"0123", "num.":"num"})"";
+    EXPECT_EQ(GRD_InsertDoc(g_db, RIGHT_COLLECTION_NAME, document1, 0), GRD_INVALID_ARGS);
+}
+} // namespace