diff --git a/coolstore-partner-common/src/main/java/com/cool/store/utils/OpenSignatureUtil.java b/coolstore-partner-common/src/main/java/com/cool/store/utils/OpenSignatureUtil.java
index 149a667fc..5069f1026 100644
--- a/coolstore-partner-common/src/main/java/com/cool/store/utils/OpenSignatureUtil.java
+++ b/coolstore-partner-common/src/main/java/com/cool/store/utils/OpenSignatureUtil.java
@@ -28,6 +28,7 @@ public class OpenSignatureUtil {
                         .filter(e -> !"appKey".equals(e.getKey()))
                         .filter(e -> !"timestamp".equals(e.getKey()))
                         .filter(e -> !"sign".equals(e.getKey()))
+                        .filter(e -> e.getValue() != null && !e.getValue().isEmpty())
                         .collect(Collectors.toMap(
                                 Map.Entry::getKey,
                                 Map.Entry::getValue