diff --git a/src/OfficialAccount/Material/Client.php b/src/OfficialAccount/Material/Client.php
index d02924954..8a56dd8e3 100644
--- a/src/OfficialAccount/Material/Client.php
+++ b/src/OfficialAccount/Material/Client.php
@@ -157,9 +157,9 @@ public function uploadArticleImage(string $path)
      */
     public function get(string $mediaId)
     {
-        $response = $this->requestRaw('cgi-bin/material/get_material', 'GET', ['query' => ['media_id' => $mediaId]]);
+        $response = $this->requestRaw('cgi-bin/material/get_material', 'POST', ['json' => ['media_id' => $mediaId]]);
 
-        if (preg_match('/(image|video|audio)/i', $response->getHeaderLine('Content-Type'))) {
+        if (strpos($response->getHeaderLine('Content-Type'), 'text') === false) {
             return StreamResponse::buildFromPsrResponse($response);
         }
 
diff --git a/tests/OfficialAccount/Material/ClientTest.php b/tests/OfficialAccount/Material/ClientTest.php
index 0b787af05..a06f3a86e 100644
--- a/tests/OfficialAccount/Material/ClientTest.php
+++ b/tests/OfficialAccount/Material/ClientTest.php
@@ -157,15 +157,15 @@ public function testGet()
         $client = $this->mockApiClient(Client::class, [], new ServiceContainer(['response_type' => 'array']));
 
         // stream response
-        $response = new Response(200, ['Content-Type' => ['image/jpeg']], 'mock-content');
-        $client->expects()->requestRaw('cgi-bin/material/get_material', 'GET', ['query' => ['media_id' => 'mock-media-id']])
+        $response = new Response(200, [], 'mock-content');
+        $client->expects()->requestRaw('cgi-bin/material/get_material', 'POST', ['json' => ['media_id' => 'mock-media-id']])
                     ->andReturn($response)->once();
 
         $this->assertInstanceOf(StreamResponse::class, $client->get('mock-media-id'));
 
         // json response
-        $response = new Response(200, ['Content-Type' => ['application/json']], '{"title": "mock-title"}');
-        $client->expects()->requestRaw('cgi-bin/material/get_material', 'GET', ['query' => ['media_id' => 'mock-media-id']])
+        $response = new Response(200, ['Content-Type' => ['text/plain']], '{"title": "mock-title"}');
+        $client->expects()->requestRaw('cgi-bin/material/get_material', 'POST', ['json' => ['media_id' => 'mock-media-id']])
                     ->andReturn($response)->once();
 
         $result = $client->get('mock-media-id');