diff --git a/plugins/zltx_card/internal/util.go b/plugins/zltx_card/internal/util.go
index 97aabd2..fe5920a 100644
--- a/plugins/zltx_card/internal/util.go
+++ b/plugins/zltx_card/internal/util.go
@@ -50,7 +50,7 @@ func verify(notify *po.Notify, appKey string) bool {
 	var kvStr []string
 
 	for _, kv := range kvRows {
-		if kv.Key != "sign" && kv.Key != "version" {
+		if kv.Key != "sign" && kv.Key != "version" && kv.Value != "" {
 			kvStr = append(kvStr, kv.Key+"="+kv.Value)
 		}
 	}