diff --git a/CHANGELOG.md b/CHANGELOG.md
index fc98e69d2..8411cf3ba 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,4 +1,8 @@
-## TBD - v3.7.5
+## v3.7.5
+
+### fixed
+
+- fix: 支付宝响应空签名时签名验证逻辑错误的问题(#998)
 
 ### optimized
 
diff --git a/src/Exception/Exception.php b/src/Exception/Exception.php
index 1085168ff..73801209e 100644
--- a/src/Exception/Exception.php
+++ b/src/Exception/Exception.php
@@ -44,6 +44,8 @@ class Exception extends \Exception
 
     public const RESPONSE_MISSING_NECESSARY_PARAMS = 9305;
 
+    public const RESPONSE_BUSINESS_CODE_WRONG = 9306;
+
     /*
      * 关于配置.
      */
diff --git a/src/Plugin/Alipay/V2/ResponsePlugin.php b/src/Plugin/Alipay/V2/ResponsePlugin.php
index 5ceafa7e8..36f2870e6 100644
--- a/src/Plugin/Alipay/V2/ResponsePlugin.php
+++ b/src/Plugin/Alipay/V2/ResponsePlugin.php
@@ -6,14 +6,19 @@
 
 use Closure;
 use Yansongda\Artful\Contract\PluginInterface;
+use Yansongda\Artful\Exception\InvalidResponseException;
 use Yansongda\Artful\Logger;
 use Yansongda\Artful\Rocket;
+use Yansongda\Pay\Exception\Exception;
 use Yansongda\Supports\Collection;
 
 use function Yansongda\Artful\should_do_http_request;
 
 class ResponsePlugin implements PluginInterface
 {
+    /**
+     * @throws InvalidResponseException
+     */
     public function assembly(Rocket $rocket, Closure $next): Rocket
     {
         /* @var Rocket $rocket */
@@ -26,9 +31,16 @@ public function assembly(Rocket $rocket, Closure $next): Rocket
         $resultKey = str_replace('.', '_', $payload->get('method')).'_response';
 
         if (should_do_http_request($rocket->getDirection()) && $destination instanceof Collection) {
+            $sign = $destination->get('sign', '');
+            $response = $destination->get($resultKey, $destination->all());
+
+            if (empty($sign) && '10000' !== ($response['code'] ?? 'null')) {
+                throw new InvalidResponseException(Exception::RESPONSE_BUSINESS_CODE_WRONG, '支付宝网关响应异常: '.($response['sub_msg'] ?? $response['msg'] ?? '未知错误，请查看支付宝原始响应'), $rocket->getDestination());
+            }
+
             $rocket->setDestination(new Collection(array_merge(
-                ['_sign' => $destination->get('sign', '')],
-                $destination->get($resultKey, $destination->all())
+                ['_sign' => $sign],
+                $response
             )));
         }
 
diff --git a/tests/Plugin/Alipay/V2/ResponsePluginTest.php b/tests/Plugin/Alipay/V2/ResponsePluginTest.php
index db93a5db1..951b990ad 100644
--- a/tests/Plugin/Alipay/V2/ResponsePluginTest.php
+++ b/tests/Plugin/Alipay/V2/ResponsePluginTest.php
@@ -2,6 +2,8 @@
 
 namespace Yansongda\Pay\Tests\Plugin\Alipay\V2;
 
+use Yansongda\Artful\Exception\InvalidResponseException;
+use Yansongda\Pay\Exception\Exception;
 use Yansongda\Pay\Plugin\Alipay\V2\ResponsePlugin;
 use Yansongda\Artful\Rocket;
 use Yansongda\Pay\Tests\TestCase;
@@ -82,4 +84,27 @@ public function testErrorResponseWithNoMethodKey()
 
         self::assertEquals(array_merge(['_sign' => '123'], $destination), $result->getDestination()->all());
     }
+
+    public function testErrorResponseWithEmptySignKey()
+    {
+        self::expectException(InvalidResponseException::class);
+        self::expectExceptionCode(Exception::RESPONSE_BUSINESS_CODE_WRONG);
+        self::expectExceptionMessage('支付宝网关响应异常: 无效的AppID参数');
+
+        $destination = [
+            'alipay_fund_trans_uni_transfer_response' => [
+                'code' => '40002',
+                'msg' => 'Invalid Arguments',
+                'sub_code' => 'isv.invalid-app-id',
+                'sub_msg' => '无效的AppID参数',
+            ],
+            'sign' => ''
+        ];
+
+        $rocket = (new Rocket())
+            ->mergePayload(['method' => 'alipay_fund_trans_uni_transfer'])
+            ->setDestination(new Collection($destination));
+
+        $this->plugin->assembly($rocket, function ($rocket) {return $rocket; });
+    }
 }