diff --git a/flowlong-spring-boot-starter/src/main/java/com/aizuda/bpm/spring/adaptive/FlowJacksonHandler.java b/flowlong-spring-boot-starter/src/main/java/com/aizuda/bpm/spring/adaptive/FlowJacksonHandler.java
index ac110143..a100a996 100644
--- a/flowlong-spring-boot-starter/src/main/java/com/aizuda/bpm/spring/adaptive/FlowJacksonHandler.java
+++ b/flowlong-spring-boot-starter/src/main/java/com/aizuda/bpm/spring/adaptive/FlowJacksonHandler.java
@@ -6,6 +6,7 @@
 
 import com.aizuda.bpm.engine.assist.Assert;
 import com.aizuda.bpm.engine.handler.FlowJsonHandler;
+import com.fasterxml.jackson.annotation.JsonInclude;
 import com.fasterxml.jackson.core.JsonProcessingException;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import com.fasterxml.jackson.databind.ObjectMapper;
@@ -27,6 +28,7 @@ public class FlowJacksonHandler implements FlowJsonHandler {
     static {
         OBJECT_MAPPER.registerModule(new JavaTimeModule());
         OBJECT_MAPPER.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
+        OBJECT_MAPPER.setSerializationInclusion(JsonInclude.Include.NON_EMPTY);
     }
 
     @Override