diff --git a/src/Client.php b/src/Client.php
index d146c50..b4fa226 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -278,9 +278,13 @@ public function __call($name, $args)
         }
 
         // args, {Operation}Request request, array options
-        $request = isset($args[0]) ? $args[0] : [];
-        $options = count($args) > 1 ? $args[1] : [];
+        $request = $args[0] ?? [];
+        $options = $args[1] ?? [];
 
+        if (version_compare(PHP_VERSION, '8.0.0', '>=')) {
+            $request = $args['request'] ?? $request;
+            $options = $args['args'] ?? $options;
+        }
         if (!($request instanceof Types\RequestModel)) {
             throw new \InvalidArgumentException('args[0] is not subclass of RequestModel, got ' . \gettype($request));
         }
diff --git a/tests/IntegrationTests/ClientCallArgsTest.php b/tests/IntegrationTests/ClientCallArgsTest.php
new file mode 100644
index 0000000..e95b8ea
--- /dev/null
+++ b/tests/IntegrationTests/ClientCallArgsTest.php
@@ -0,0 +1,51 @@
+<?php
+
+namespace IntegrationTests;
+
+require_once __DIR__ . DIRECTORY_SEPARATOR . 'TestIntegration.php';
+
+use AlibabaCloud\Oss\V2 as Oss;
+use SebastianBergmann\Type\ObjectType;
+
+class ClientCallArgsTest extends TestIntegration
+{
+    public function testClientCallArgs()
+    {
+        $client = $this->getDefaultClient();
+        $bucketName = self::$bucketName;
+        $key = self::randomObjectName();
+
+        // case 1:
+        $request = new \AlibabaCloud\Oss\V2\Models\PutObjectRequest($bucketName, $key);
+        $request->body = \AlibabaCloud\Oss\V2\Utils::streamFor('hi oss');
+        $result = $client->putObject($request);
+        $this->assertEquals(200, $result->statusCode);
+        $this->assertEquals('OK', $result->status);
+        $this->assertEquals(True, count($result->headers) > 0);
+        $this->assertEquals(24, strlen($result->requestId));
+
+        // case 2:
+        $result = $client->putObject(
+            new \AlibabaCloud\Oss\V2\Models\PutObjectRequest(
+                bucket: $bucketName,
+                key: $key,
+                body: \AlibabaCloud\Oss\V2\Utils::streamFor('hi oss')
+            ));
+        $this->assertEquals(200, $result->statusCode);
+        $this->assertEquals('OK', $result->status);
+        $this->assertEquals(True, count($result->headers) > 0);
+        $this->assertEquals(24, strlen($result->requestId));
+
+        // case 3:
+        $result = $client->putObject(
+            request: new \AlibabaCloud\Oss\V2\Models\PutObjectRequest(
+            bucket: $bucketName,
+            key: $key,
+            body: \AlibabaCloud\Oss\V2\Utils::streamFor('hi oss')
+        ));
+        $this->assertEquals(200, $result->statusCode);
+        $this->assertEquals('OK', $result->status);
+        $this->assertEquals(True, count($result->headers) > 0);
+        $this->assertEquals(24, strlen($result->requestId));
+    }
+}