diff --git a/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/options/ConstantValue.java b/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/options/ConstantValue.java
index f22ba611fc..2d252227e0 100644
--- a/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/options/ConstantValue.java
+++ b/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/options/ConstantValue.java
@@ -36,6 +36,8 @@ public class ConstantValue {
     public static final Integer HTTP_CHECK_TIMEOUT_DEFAULT = 10 * 1000;
     public static final Integer QUEUE_OFFER_TIMEOUT_DEFAULT = 60 * 1000;
     public static final Integer QUEUE_POLL_TIMEOUT_DEFAULT = 60 * 1000;
-    public static final Long SINK_BATCH_MAX_BYTES_DEFAULT = 2 * 1024 * 1024 * 1024L;
+    // 50mb, If you need to set a larger value, you need to set a larger taskmanager memory,
+    // otherwise OOM may occur.
+    public static final Long SINK_BATCH_MAX_BYTES_DEFAULT = 50 * 1024 * 1024L;
     public static final Long SINK_BATCH_MAX_ROWS_DEFAULT = 2048 * 100L;
 }
diff --git a/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/sink/StarRocksOutputFormat.java b/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/sink/StarRocksOutputFormat.java
index d999b0f1e1..69f304874d 100644
--- a/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/sink/StarRocksOutputFormat.java
+++ b/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/sink/StarRocksOutputFormat.java
@@ -21,11 +21,13 @@
 import com.dtstack.chunjun.config.FieldConfig;
 import com.dtstack.chunjun.connector.starrocks.config.StarRocksConfig;
 import com.dtstack.chunjun.connector.starrocks.connection.StarRocksJdbcConnectionProvider;
+import com.dtstack.chunjun.connector.starrocks.options.ConstantValue;
 import com.dtstack.chunjun.connector.starrocks.streamload.StarRocksQueryVisitor;
 import com.dtstack.chunjun.connector.starrocks.streamload.StarRocksSinkBufferEntity;
 import com.dtstack.chunjun.connector.starrocks.streamload.StarRocksStreamLoadFailedException;
 import com.dtstack.chunjun.connector.starrocks.streamload.StreamLoadManager;
 import com.dtstack.chunjun.constants.Metrics;
+import com.dtstack.chunjun.element.ColumnRowData;
 import com.dtstack.chunjun.sink.format.BaseRichOutputFormat;
 import com.dtstack.chunjun.throwable.ChunJunRuntimeException;
 import com.dtstack.chunjun.util.GsonUtil;
@@ -142,13 +144,18 @@ public synchronized void writeRecord(RowData rowData) {
         checkTimerWriteException();
         int size = 0;
         rows.add(rowData);
-        if (rows.size() >= batchSize) {
+        if (rowData instanceof ColumnRowData) {
+            batchMaxByteSize += ((ColumnRowData) rowData).getByteSize();
+        } else {
+            batchMaxByteSize += rowSizeCalculator.getObjectSize(rowData);
+        }
+        if (rows.size() >= starRocksConfig.getBatchSize()
+                || batchMaxByteSize >= ConstantValue.SINK_BATCH_MAX_BYTES_DEFAULT) {
             writeRecordInternal();
             size = batchSize;
         }
 
         updateDuration();
-        bytesWriteCounter.add(rowSizeCalculator.getObjectSize(rowData));
         if (checkpointEnabled) {
             snapshotWriteCounter.add(size);
         }
@@ -160,6 +167,7 @@ protected synchronized void writeRecordInternal() {
             try {
                 writeMultipleRecordsInternal();
                 numWriteCounter.add(rows.size());
+                bytesWriteCounter.add(batchMaxByteSize);
             } catch (Exception e) {
                 if (e instanceof StarRocksStreamLoadFailedException) {
                     StarRocksStreamLoadFailedException exception =
@@ -178,6 +186,7 @@ protected synchronized void writeRecordInternal() {
             } finally {
                 // Data is either recorded dirty data or written normally
                 rows.clear();
+                batchMaxByteSize = 0;
             }
         }
     }
diff --git a/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/sink/StarRocksSinkFactory.java b/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/sink/StarRocksSinkFactory.java
index 2416c1228c..1dafbbe490 100644
--- a/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/sink/StarRocksSinkFactory.java
+++ b/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/sink/StarRocksSinkFactory.java
@@ -36,6 +36,8 @@
 
 import java.util.stream.Collectors;
 
+import static com.dtstack.chunjun.connector.starrocks.options.ConstantValue.SINK_BATCH_MAX_ROWS_DEFAULT;
+
 public class StarRocksSinkFactory extends SinkFactory {
 
     private final StarRocksConfig starRocksConfig;
@@ -47,7 +49,8 @@ public StarRocksSinkFactory(SyncConfig syncConfig) {
                         JsonUtil.toJson(syncConfig.getWriter().getParameter()),
                         StarRocksConfig.class);
 
-        int batchSize = syncConfig.getWriter().getIntVal("batchSize", 1024);
+        int batchSize =
+                (int) syncConfig.getWriter().getLongVal("batchSize", SINK_BATCH_MAX_ROWS_DEFAULT);
         starRocksConfig.setBatchSize(batchSize);
         super.initCommonConf(starRocksConfig);
     }
diff --git a/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/streamload/StarRocksStreamLoadVisitor.java b/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/streamload/StarRocksStreamLoadVisitor.java
index ad1eb285a5..1936c07264 100644
--- a/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/streamload/StarRocksStreamLoadVisitor.java
+++ b/chunjun-connectors/chunjun-connector-starrocks/src/main/java/com/dtstack/chunjun/connector/starrocks/streamload/StarRocksStreamLoadVisitor.java
@@ -250,6 +250,10 @@ private boolean tryHttpConnection(String host) {
     }
 
     private byte[] joinRows(List<byte[]> rows, int totalBytes) {
+        if (totalBytes < 0) {
+            throw new RuntimeException(
+                    "The ByteBuffer limit has been exceeded, json assembly may fail");
+        }
         ByteBuffer bos = ByteBuffer.allocate(totalBytes + (rows.isEmpty() ? 2 : 1 - rows.size()));
         bos.put("[".getBytes(StandardCharsets.UTF_8));
         byte[] jsonDelimiter = ",".getBytes(StandardCharsets.UTF_8);
diff --git a/chunjun-core/src/main/java/com/dtstack/chunjun/sink/format/BaseRichOutputFormat.java b/chunjun-core/src/main/java/com/dtstack/chunjun/sink/format/BaseRichOutputFormat.java
index d73a78f1d4..8975ce7ebb 100644
--- a/chunjun-core/src/main/java/com/dtstack/chunjun/sink/format/BaseRichOutputFormat.java
+++ b/chunjun-core/src/main/java/com/dtstack/chunjun/sink/format/BaseRichOutputFormat.java
@@ -132,8 +132,10 @@ public abstract class BaseRichOutputFormat extends RichOutputFormat<RowData>
     /** 最新读取的数据 */
     protected RowData lastRow = null;
 
-    /** 存储用于批量写入的数据 */
+    /** 存储用于批量写入的数据行数 */
     protected transient List<RowData> rows;
+    /** 存储用于批量写入的数据字节数 */
+    protected transient long batchMaxByteSize;
     /** 数据类型转换器 */
     protected AbstractRowConverter rowConverter;
     /** 是否需要初始化脏数据和累加器，目前只有hive插件该参数设置为false */