diff --git a/server/internal/api/exports.go b/server/internal/api/exports.go
index b4e6c65..9dde141 100644
--- a/server/internal/api/exports.go
+++ b/server/internal/api/exports.go
@@ -1133,13 +1133,10 @@ func transformRow(ds string, fields []string, vals []string) []string {
 		}
 		// voucher.is_webview - 打开方式
 		if f == "voucher.is_webview" {
-			switch v {
-			case "0":
-				vals[i] = "微信小程序"
-			case "1":
-				vals[i] = "公众号"
-			case "2":
-				vals[i] = "通用"
+			if n := parseIntVal(v); n >= 0 {
+				if label, ok := constants.VoucherOpenMode[n]; ok {
+					vals[i] = label
+				}
 			}
 			continue
 		}
diff --git a/server/internal/constants/enums.go b/server/internal/constants/enums.go
index 3cb23d7..069e1e2 100644
--- a/server/internal/constants/enums.go
+++ b/server/internal/constants/enums.go
@@ -122,6 +122,13 @@ var MarketingRechargeType = map[int]string{
 	2: "组合商品充值",
 }
 
+// VoucherOpenMode 立减金打开方式映射
+var VoucherOpenMode = map[int]string{
+	0: "微信小程序",
+	1: "公众号",
+	2: "通用",
+}
+
 // ==================== 通用枚举 ====================
 
 // ThirdPartyType 第三方类型映射