diff --git a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/domain/vo/FlowVariableVo.java b/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/domain/vo/FlowVariableVo.java
deleted file mode 100644
index b4de76e93..000000000
--- a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/domain/vo/FlowVariableVo.java
+++ /dev/null
@@ -1,28 +0,0 @@
-package org.dromara.workflow.domain.vo;
-
-import lombok.Data;
-
-import java.io.Serial;
-import java.io.Serializable;
-
-/**
- * 流程变量
- *
- * @author may
- */
-@Data
-public class FlowVariableVo implements Serializable {
-
-    @Serial
-    private static final long serialVersionUID = 1L;
-
-    /**
-     * 变量key
-     */
-    private String key;
-
-    /**
-     * 变量值
-     */
-    private String value;
-}
diff --git a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwInstanceServiceImpl.java b/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwInstanceServiceImpl.java
index 5518cd4ba..2aa95484f 100644
--- a/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwInstanceServiceImpl.java
+++ b/ruoyi-modules/ruoyi-workflow/src/main/java/org/dromara/workflow/service/impl/FlwInstanceServiceImpl.java
@@ -42,7 +42,6 @@ import org.dromara.workflow.domain.bo.FlowInstanceBo;
 import org.dromara.workflow.domain.bo.FlowInvalidBo;
 import org.dromara.workflow.domain.vo.FlowHisTaskVo;
 import org.dromara.workflow.domain.vo.FlowInstanceVo;
-import org.dromara.workflow.domain.vo.FlowVariableVo;
 import org.dromara.workflow.handler.FlowProcessEventHandler;
 import org.dromara.workflow.mapper.FlwCategoryMapper;
 import org.dromara.workflow.mapper.FlwInstanceMapper;
@@ -346,21 +345,12 @@ public class FlwInstanceServiceImpl implements IFlwInstanceService {
      */
     @Override
     public Map<String, Object> instanceVariable(Long instanceId) {
-        Map<String, Object> map = new HashMap<>();
         FlowInstance flowInstance = flowInstanceMapper.selectById(instanceId);
-        Map<String, Object> variableMap = flowInstance.getVariableMap();
-        List<FlowVariableVo> list = new ArrayList<>();
-        if (CollUtil.isNotEmpty(variableMap)) {
-            for (Map.Entry<String, Object> entry : variableMap.entrySet()) {
-                FlowVariableVo flowVariableVo = new FlowVariableVo();
-                flowVariableVo.setKey(entry.getKey());
-                flowVariableVo.setValue(entry.getValue().toString());
-                list.add(flowVariableVo);
-            }
-        }
-        map.put("variableList", list);
-        map.put("variable", flowInstance.getVariable());
-        return map;
+        Map<String, Object> variableMap = Optional.ofNullable(flowInstance.getVariableMap()).orElse(Collections.emptyMap());
+        List<Map<String, Object>> variableList = variableMap.entrySet().stream()
+            .map(entry -> Map.of("key", entry.getKey(), "value", entry.getValue()))
+            .toList();
+        return Map.of("variableList", variableList, "variable", flowInstance.getVariable());
     }
 
     /**