diff --git a/src/main/java/com/starrocks/connector/flink/manager/StarRocksSinkTable.java b/src/main/java/com/starrocks/connector/flink/manager/StarRocksSinkTable.java
index 8f0571da..1064952e 100644
--- a/src/main/java/com/starrocks/connector/flink/manager/StarRocksSinkTable.java
+++ b/src/main/java/com/starrocks/connector/flink/manager/StarRocksSinkTable.java
@@ -141,8 +141,11 @@ public void validateTableStructure(StarRocksSinkOptions sinkOptions, TableSchema
             }
 
             String srType = srColumn.get("DATA_TYPE").toString().toLowerCase();
-            boolean typeMatched = typesMap.containsKey(srType) &&
-                    typesMap.get(srType).contains(column.getType().getLogicalType().getTypeRoot());
+            // Some types of StarRocks, such as json, are not mapped to Flink natively,
+            // and there will be no entry in typesMap, but they can be represented as
+            // STRING in Flink generally, so we think the type is matched even if
+            // typesMap does not contain the srType
+            boolean typeMatched = !typesMap.containsKey(srType) || typesMap.get(srType).contains(column.getType().getLogicalType().getTypeRoot());
             if (!typeMatched) {
                 throw new IllegalArgumentException(
                         String.format("Flink and StarRocks types are not matched for column %s, " +
diff --git a/src/test/java/com/starrocks/connector/flink/it/sink/StarRocksSinkITTest.java b/src/test/java/com/starrocks/connector/flink/it/sink/StarRocksSinkITTest.java
index 517b7c9a..36a5780a 100644
--- a/src/test/java/com/starrocks/connector/flink/it/sink/StarRocksSinkITTest.java
+++ b/src/test/java/com/starrocks/connector/flink/it/sink/StarRocksSinkITTest.java
@@ -545,4 +545,57 @@ private String createPkTable(String tablePrefix) throws Exception {
         executeSrSQL(createStarRocksTable);
         return tableName;
     }
+
+    @Test
+    public void testUnalignedTypes() throws Exception {
+        String tableName = "testUnalignedTypes_" + genRandomUuid();
+        String createStarRocksTable =
+                String.format(
+                        "CREATE TABLE `%s`.`%s` (" +
+                                "c0 INT," +
+                                "c1 LARGEINT," +
+                                "c2 JSON" +
+                                ") ENGINE = OLAP " +
+                                "PRIMARY KEY(c0) " +
+                                "DISTRIBUTED BY HASH (c0) BUCKETS 8 " +
+                                "PROPERTIES (" +
+                                "\"replication_num\" = \"1\"" +
+                                ")",
+                        DB_NAME, tableName);
+        executeSrSQL(createStarRocksTable);
+
+        StreamExecutionEnvironment env = StreamExecutionEnvironment.getExecutionEnvironment();
+        env.setParallelism(1);
+        StreamTableEnvironment tEnv = StreamTableEnvironment.create(env);
+
+        StarRocksSinkOptions sinkOptions = StarRocksSinkOptions.builder()
+                .withProperty("jdbc-url", getJdbcUrl())
+                .withProperty("load-url", getHttpUrls())
+                .withProperty("database-name", DB_NAME)
+                .withProperty("table-name", tableName)
+                .withProperty("username", "root")
+                .withProperty("password", "")
+                .build();
+
+        String createSQL = "CREATE TABLE sink(" +
+                    "c0 INT," +
+                    "c1 STRING," +
+                    "c2 STRING," +
+                    "PRIMARY KEY (`c0`) NOT ENFORCED" +
+                ") WITH ( " +
+                    "'connector' = 'starrocks'," +
+                    "'jdbc-url'='" + sinkOptions.getJdbcUrl() + "'," +
+                    "'load-url'='" + String.join(";", sinkOptions.getLoadUrlList()) + "'," +
+                    "'sink.version' = '" + (isSinkV2 ? "V2" : "V1") + "'," +
+                    "'database-name' = '" + DB_NAME + "'," +
+                    "'table-name' = '" + sinkOptions.getTableName() + "'," +
+                    "'username' = '" + sinkOptions.getUsername() + "'," +
+                    "'password' = '" + sinkOptions.getPassword() + "'" +
+                ")";
+
+        tEnv.executeSql(createSQL);
+        tEnv.executeSql("INSERT INTO sink VALUES (1, '123', '{\"key\": 1, \"value\": 2}')").await();
+        List<List<Object>> actualData = scanTable(DB_CONNECTION, DB_NAME, tableName);
+        verifyResult(Collections.singletonList(Arrays.asList(1, "123", "{\"key\": 1, \"value\": 2}")), actualData);
+    }
 }