diff --git a/src/main/java/com/wflow/workflow/task/TriggerServiceTask.java b/src/main/java/com/wflow/workflow/task/TriggerServiceTask.java
index 674d8b4..baebb1c 100644
--- a/src/main/java/com/wflow/workflow/task/TriggerServiceTask.java
+++ b/src/main/java/com/wflow/workflow/task/TriggerServiceTask.java
@@ -2,6 +2,7 @@ package com.wflow.workflow.task;
 
 import cn.hutool.http.HttpRequest;
 import cn.hutool.http.HttpResponse;
+import com.alibaba.fastjson2.JSON;
 import com.alibaba.fastjson2.JSONObject;
 import com.wflow.utils.BeanUtil;
 import com.wflow.utils.EmailUtil;
@@ -15,6 +16,7 @@ import org.flowable.engine.delegate.DelegateExecution;
 import org.flowable.engine.delegate.JavaDelegate;
 
 import javax.mail.MessagingException;
+import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.regex.Matcher;
@@ -115,9 +117,18 @@ public class TriggerServiceTask implements JavaDelegate {
         //处理请求体
         if ("FORM".equals(http.getContentType())) {
             http.getParams().stream().filter(o -> o != null && o.getName() != null && !"".equals(o.getName())).forEach(hd -> {
-                request.form(hd.getName(), hd.getIsField() ?
-                        String.valueOf(variables.getOrDefault(String.valueOf(hd.getValue()), ""))
-                        : getStrByRegex(String.valueOf(hd.getValue()), variables));
+                String v;
+                if (hd.getIsField()) {
+                    Object orDefault = variables.getOrDefault(String.valueOf(hd.getValue()), "");
+                    if (orDefault instanceof List) {
+                        v = JSON.toJSONString(orDefault);
+                    } else {
+                        v = String.valueOf(orDefault);
+                    }
+                } else {
+                    v = getStrByRegex(String.valueOf(hd.getValue()), variables);
+                }
+                request.form(hd.getName(), v);
             });
             request.form("dfInstanceId", execution.getProcessInstanceId());
             request.form("dfNodeId", execution.getCurrentActivityId());