diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 6ea4dea..88d0f40 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -58,6 +58,8 @@ jobs:
         timeout-minutes: 1 # 设置步骤超时时间为 1 分钟
         env:
           RABBITMQ_HOST: rabbitmq
+          RABBITMQ_USERNAME: admin
+          RABBITMQ_PASSWORD: admin
         run: |
           source .venv/bin/activate
           pytest tests/
\ No newline at end of file
diff --git a/src/use_rabbitmq/__init__.py b/src/use_rabbitmq/__init__.py
index f4786d2..359d7f7 100644
--- a/src/use_rabbitmq/__init__.py
+++ b/src/use_rabbitmq/__init__.py
@@ -46,7 +46,7 @@ def __init__(
         self.parameters: Dict[str, Any] = {
             "hostname": host or os.environ.get("RABBITMQ_HOST", "localhost"),
             "port": port or int(os.environ.get("RABBITMQ_PORT", 5672)),
-            "username": username or os.environ.get("RABBITMQ_USER", "guest"),
+            "username": username or os.environ.get("RABBITMQ_USERNAME", "guest"),
             "password": password or os.environ.get("RABBITMQ_PASSWORD", "guest"),
         }
         if kwargs: