diff --git a/backend/app/Constants/RefundStatus.php b/backend/app/Constants/RefundStatus.php
new file mode 100644
index 0000000..7e188c0
--- /dev/null
+++ b/backend/app/Constants/RefundStatus.php
@@ -0,0 +1,33 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Constants;
+
+use Hyperf\Constants\Annotation\Constants;
+use Hyperf\Constants\Annotation\Message;
+use Hyperf\Constants\EnumConstantsTrait;
+
+#[Constants]
+enum RefundStatus: int
+{
+    use EnumConstantsTrait;
+
+    #[Message("Refund applied")]
+    case APPLIED = 1;
+
+    #[Message("Seller accepted")]
+    case SELLER_ACCEPTED = 2;
+
+    #[Message("Seller dispute")]
+    case SELLER_DISPUTE = 3;
+
+    #[Message("Seller refused")]
+    case REFUSED = 4;
+
+    #[Message("Refund success")]
+    case SUCCESS = 5;
+
+    #[Message("Refund closed")]
+    case CLOSED = 6;
+}
diff --git a/backend/app/Constants/RefundType.php b/backend/app/Constants/RefundType.php
new file mode 100644
index 0000000..e85bf29
--- /dev/null
+++ b/backend/app/Constants/RefundType.php
@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Constants;
+
+use Hyperf\Constants\Annotation\Constants;
+use Hyperf\Constants\Annotation\Message;
+use Hyperf\Constants\EnumConstantsTrait;
+
+#[Constants]
+enum RefundType: int
+{
+    use EnumConstantsTrait;
+
+    #[Message("Refund only")]
+    case REFUND_ONLY = 1;
+
+    #[Message("Return and refund")]
+    case RETURN_AND_REFUND = 2;
+
+    #[Message("Compensation refund")]
+    case COMPENSATION = 3;
+
+    #[Message("Refund without return")]
+    case REFUND_WITHOUT_RETURN = 4;
+}