diff --git a/plugin/reader/kafkareader/src/main/java/com/wgzhao/addax/plugin/reader/kafkareader/KafkaReader.java b/plugin/reader/kafkareader/src/main/java/com/wgzhao/addax/plugin/reader/kafkareader/KafkaReader.java
index 473f924fb..cc1551848 100644
--- a/plugin/reader/kafkareader/src/main/java/com/wgzhao/addax/plugin/reader/kafkareader/KafkaReader.java
+++ b/plugin/reader/kafkareader/src/main/java/com/wgzhao/addax/plugin/reader/kafkareader/KafkaReader.java
@@ -11,6 +11,8 @@
 import com.wgzhao.addax.common.plugin.RecordSender;
 import com.wgzhao.addax.common.spi.Reader;
 import com.wgzhao.addax.common.util.Configuration;
+import org.apache.commons.lang3.RandomStringUtils;
+import org.apache.commons.lang3.StringUtils;
 import org.apache.kafka.clients.consumer.ConsumerConfig;
 import org.apache.kafka.clients.consumer.ConsumerRecord;
 import org.apache.kafka.clients.consumer.ConsumerRecords;
@@ -81,7 +83,7 @@ public void init()
             this.columns = configuration.getList(KafkaKey.COLUMN, String.class);
             this.missKeyValue = configuration.getString(KafkaKey.MISSING_KEY_VALUE, null);
             properties.put(ConsumerConfig.BOOTSTRAP_SERVERS_CONFIG, brokeLists);
-            properties.put(ConsumerConfig.GROUP_ID_CONFIG, GROUP_ID);
+            properties.put(ConsumerConfig.GROUP_ID_CONFIG, GROUP_ID + "-" + RandomStringUtils.randomAlphanumeric(5));
             properties.put(ConsumerConfig.KEY_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
             properties.put(ConsumerConfig.VALUE_DESERIALIZER_CLASS_CONFIG, StringDeserializer.class);
             properties.put(ConsumerConfig.CLIENT_ID_CONFIG, CLIENT_ID);
@@ -96,47 +98,16 @@ public void init()
         @Override
         public void destroy()
         {
-
+            kafkaConsumer.close();
         }
 
         @Override
         public void startRead(RecordSender recordSender)
         {
-            try {
-                while (true) {
-                    ConsumerRecords<String, Object> items = kafkaConsumer.poll(Duration.ofSeconds(100));
-                    for (ConsumerRecord<String, Object> item : items) {
-                        Record record = recordSender.createRecord();
-                        logger.debug("topic = {}, partition = {}, offset = {}, kafkaConsumer = {}, country = {}%n",
-                                item.topic(), item.partition(), item.offset(),
-                                item.key(), item.value());
-                        final JSONObject jsonObject = JSONObject.parseObject(item.value().toString());
-                        if (columns.size() == 1 && "*".equals(columns.get(0))) {
-                            //assume all json value type is string
-                            for (String key : jsonObject.keySet()) {
-                                record.addColumn(new StringColumn(jsonObject.getString(key)));
-                            }
-                        }
-                        else {
-                            for (String col : columns) {
-                                if (!jsonObject.containsKey(col)) {
-                                    if (this.missKeyValue == null) {
-                                        throw AddaxException.asAddaxException(CONFIG_ERROR,
-                                                "The column " + col + " not exists");
-                                    }
-                                    record.addColumn(new StringColumn(this.missKeyValue));
-                                }
-                                else {
-                                    record.addColumn(guessColumnType(jsonObject.get(col)));
-                                }
-                            }
-                        }
-                        recordSender.sendToWriter(record);
-                    }
-                }
-            }
-            finally {
-                kafkaConsumer.close();
+            while (true) {
+                ConsumerRecords<String, Object> items = kafkaConsumer.poll(Duration.ofSeconds(2));
+                sendData(items, recordSender);
+                recordSender.flush();
             }
         }
 
@@ -153,5 +124,37 @@ private Column guessColumnType(Object obj)
             }
             return new StringColumn(obj.toString());
         }
+
+        private void sendData(ConsumerRecords<String, Object> items, RecordSender recordSender)
+        {
+            for (ConsumerRecord<String, Object> item : items) {
+                Record record = recordSender.createRecord();
+                logger.debug("topic = {}, partition = {}, offset = {}, kafkaConsumer = {}, country = {}%n",
+                        item.topic(), item.partition(), item.offset(),
+                        item.key(), item.value());
+                final JSONObject jsonObject = JSONObject.parseObject(item.value().toString());
+                if (columns.size() == 1 && "*".equals(columns.get(0))) {
+                    //assume all json value type is string
+                    for (String key : jsonObject.keySet()) {
+                        record.addColumn(new StringColumn(jsonObject.getString(key)));
+                    }
+                }
+                else {
+                    for (String col : columns) {
+                        if (!jsonObject.containsKey(col)) {
+                            if (this.missKeyValue == null) {
+                                throw AddaxException.asAddaxException(CONFIG_ERROR,
+                                        "The column " + col + " not exists");
+                            }
+                            record.addColumn(new StringColumn(this.missKeyValue));
+                        }
+                        else {
+                            record.addColumn(guessColumnType(jsonObject.get(col)));
+                        }
+                    }
+                }
+                recordSender.sendToWriter(record);
+            }
+        }
     }
 }