diff --git a/src/Broker.php b/src/Broker.php
index c4f909d9..881deee0 100644
--- a/src/Broker.php
+++ b/src/Broker.php
@@ -225,4 +225,27 @@ private function getSaslMechanismProvider() : SaslMechanism
         }
         return $provider;
     }
+
+    /**
+     * @param array $data
+     * @param array $partNums
+     * @return int
+     */
+    public function getPartitionId($data)
+    {
+        $topicInfos = $this->getTopics();
+        $topicMeta  = $topicInfos[$data['topic']];
+        $partNums   = array_keys($topicMeta);
+        if (isset($data['key']) && trim($data['key'])) {
+            $partId = $partNums[crc32($data['key']) % count($partNums)];
+        } else {
+            if (! isset($data['partId']) || ! isset($topicMeta[$data['partId']])) {
+                shuffle($partNums);
+                $partId = $partNums[0];
+            } else {
+                $partId = $data['partId'];
+            }
+        }
+        return $partId;
+    }
 }
diff --git a/src/Producer/Process.php b/src/Producer/Process.php
index 1a8247ff..e121a2ce 100644
--- a/src/Producer/Process.php
+++ b/src/Producer/Process.php
@@ -293,14 +293,7 @@ protected function convertMessage($data)
             }
 
             $topicMeta = $topicInfos[$value['topic']];
-            $partNums  = array_keys($topicMeta);
-            shuffle($partNums);
-            $partId = 0;
-            if (! isset($value['partId']) || ! isset($topicMeta[$value['partId']])) {
-                $partId = $partNums[0];
-            } else {
-                $partId = $value['partId'];
-            }
+            $partId    = $broker->getPartitionId($value);
 
             $brokerId  = $topicMeta[$partId];
             $topicData = [];
diff --git a/src/Producer/SyncProcess.php b/src/Producer/SyncProcess.php
index d09096f9..c2a51cf3 100644
--- a/src/Producer/SyncProcess.php
+++ b/src/Producer/SyncProcess.php
@@ -133,14 +133,7 @@ protected function convertMessage($data)
             }
 
             $topicMeta = $topicInfos[$value['topic']];
-            $partNums  = array_keys($topicMeta);
-            shuffle($partNums);
-            $partId = 0;
-            if (! isset($value['partId']) || ! isset($topicMeta[$value['partId']])) {
-                $partId = $partNums[0];
-            } else {
-                $partId = $value['partId'];
-            }
+            $partId    = $broker->getPartitionId($value);
 
             $brokerId  = $topicMeta[$partId];
             $topicData = [];
diff --git a/tests/Base/BrokerTest.php b/tests/Base/BrokerTest.php
index 46e21a4b..4f6d0b7d 100644
--- a/tests/Base/BrokerTest.php
+++ b/tests/Base/BrokerTest.php
@@ -174,4 +174,60 @@ public function testGetSocketNotSetConfig()
 
         $this->assertInstanceOf(\Kafka\SocketSync::class, $socket);
     }
+
+    /**
+     * testGetPartitionId
+     *
+     * @access public
+     * @return void
+     */
+    public function testGetPartitionId()
+    {
+        $broker = \Kafka\Broker::getInstance();
+        $data   = [
+            'brokers' => [
+                [
+                    'host' => '127.0.0.1',
+                    'port' => '9092',
+                    'nodeId' => '0',
+                ],
+                [
+                    'host' => '127.0.0.1',
+                    'port' => '9192',
+                    'nodeId' => '1',
+                ],
+                [
+                    'host' => '127.0.0.1',
+                    'port' => '9292',
+                    'nodeId' => '2',
+                ],
+            ],
+            'topics' => [
+                [
+                    'topicName' => 'test',
+                    'errorCode' => 0,
+                    'partitions' => [
+                        [
+                            'partitionId' => 0,
+                            'errorCode' => 0,
+                            'leader' => 0,
+                        ],
+                        [
+                            'partitionId' => 1,
+                            'errorCode' => 0,
+                            'leader' => 2,
+                        ],
+                    ],
+                ],
+            ],
+        ];
+        $broker->setData($data['topics'], $data['brokers']);
+        $data   = [
+            'partId' => '1',
+            'topic' => 'test',
+            'value' => 'test message'
+        ];
+        $partId = $broker->getPartitionId($data);
+        $this->assertEquals('1', $partId);
+    }
 }