diff --git a/ext-src/stubs/php_swoole_thread.stub.php b/ext-src/stubs/php_swoole_thread.stub.php
index a6617fb67b..88df2d46c4 100644
--- a/ext-src/stubs/php_swoole_thread.stub.php
+++ b/ext-src/stubs/php_swoole_thread.stub.php
@@ -8,7 +8,7 @@ public function join(): bool {}
         public function joinable(): bool {}
         public function detach(): bool {}
 
-        public static function getArguments(): array {}
+        public static function getArguments(): ?array {}
         public static function getId(): int {}
         public static function getTsrmInfo(): array {}
     }
diff --git a/ext-src/stubs/php_swoole_thread_arginfo.h b/ext-src/stubs/php_swoole_thread_arginfo.h
index 02f0a7c4a0..12e7e6d326 100644
--- a/ext-src/stubs/php_swoole_thread_arginfo.h
+++ b/ext-src/stubs/php_swoole_thread_arginfo.h
@@ -1,5 +1,5 @@
 /* This is a generated file, edit the .stub.php file instead.
- * Stub hash: 234aeadaab2ab31facf1909f0e3027e433f2a88f */
+ * Stub hash: 261ac9fd29d4f2f37118ff3b96428a0b2f85223a */
 
 ZEND_BEGIN_ARG_INFO_EX(arginfo_class_Swoole_Thread___construct, 0, 0, 1)
 	ZEND_ARG_TYPE_INFO(0, script_file, IS_STRING, 0)
@@ -13,10 +13,11 @@ ZEND_END_ARG_INFO()
 
 #define arginfo_class_Swoole_Thread_detach arginfo_class_Swoole_Thread_join
 
-ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_class_Swoole_Thread_getArguments, 0, 0, IS_ARRAY, 0)
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_class_Swoole_Thread_getArguments, 0, 0, IS_ARRAY, 1)
 ZEND_END_ARG_INFO()
 
 ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_class_Swoole_Thread_getId, 0, 0, IS_LONG, 0)
 ZEND_END_ARG_INFO()
 
-#define arginfo_class_Swoole_Thread_getTsrmInfo arginfo_class_Swoole_Thread_getArguments
+ZEND_BEGIN_ARG_WITH_RETURN_TYPE_INFO_EX(arginfo_class_Swoole_Thread_getTsrmInfo, 0, 0, IS_ARRAY, 0)
+ZEND_END_ARG_INFO()
diff --git a/ext-src/swoole_thread.cc b/ext-src/swoole_thread.cc
index 656a927999..1cd9d51ef0 100644
--- a/ext-src/swoole_thread.cc
+++ b/ext-src/swoole_thread.cc
@@ -55,7 +55,7 @@ struct ThreadObject {
 static void php_swoole_thread_join(zend_object *object);
 static void php_swoole_thread_register_stdio_file_handles(bool no_close);
 
-static thread_local zval thread_argv;
+static thread_local zval thread_argv = {};
 static thread_local JMP_BUF *thread_bailout = nullptr;
 
 static sw_inline ThreadObject *thread_fetch_object(zend_object *obj) {
@@ -189,7 +189,9 @@ static PHP_METHOD(swoole_thread, detach) {
 }
 
 static PHP_METHOD(swoole_thread, getArguments) {
-    RETURN_ZVAL(&thread_argv, 1, 0);
+    if (Z_TYPE(thread_argv) == IS_ARRAY) {
+        RETURN_ZVAL(&thread_argv, 1, 0);
+    }
 }
 
 static PHP_METHOD(swoole_thread, getId) {
diff --git a/tests/swoole_thread/empty_args.phpt b/tests/swoole_thread/empty_args.phpt
new file mode 100644
index 0000000000..8733dbfc04
--- /dev/null
+++ b/tests/swoole_thread/empty_args.phpt
@@ -0,0 +1,17 @@
+--TEST--
+swoole_thread: info
+--SKIPIF--
+<?php
+require __DIR__ . '/../include/skipif.inc';
+skip_if_nts();
+?>
+--FILE--
+<?php
+require __DIR__ . '/../include/bootstrap.php';
+
+use Swoole\Thread;
+
+$args = Thread::getArguments();
+Assert::assert($args === null);
+?>
+--EXPECTF--