diff --git a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/common/code/BpmnInstanceRespCode.java b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/common/code/BpmnInstanceRespCode.java
index 471cd0e27..281569769 100644
--- a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/common/code/BpmnInstanceRespCode.java
+++ b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/common/code/BpmnInstanceRespCode.java
@@ -26,6 +26,7 @@ public enum BpmnInstanceRespCode implements IModuleRespCode {
     PROCESS_INSTANCE_CANT_START("011", "流程实例不能启动"),
     TASK_CANT_COMMENT_INSTANCE_NOT_EXISTS("012", "流程实例【{}】不存在, 不能评论"),
     RUNNING_INSTANCE_ONLY_FORECAST("013", "仅运行中的实例可以推测"),
+    ENGINE_EXEC_EXCEPTION("014", "引擎内部异常"),
     ;
     private final String code;
     private final String message;
diff --git a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/AbstractCommand.java b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/AbstractCommand.java
index 491c72cb8..3406671d5 100644
--- a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/AbstractCommand.java
+++ b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/AbstractCommand.java
@@ -1,7 +1,11 @@
 package cn.axzo.workflow.core.engine.cmd;
 
 
+import cn.axzo.workflow.core.common.exception.WorkflowEngineException;
 import org.flowable.common.engine.impl.interceptor.Command;
+import org.flowable.common.engine.impl.interceptor.CommandContext;
+
+import static cn.axzo.workflow.core.common.code.BpmnInstanceRespCode.ENGINE_EXEC_EXCEPTION;
 
 /**
  * TODO
@@ -12,4 +16,19 @@ import org.flowable.common.engine.impl.interceptor.Command;
 public abstract class AbstractCommand<T> implements Command<T> {
 
     public abstract String paramToJsonString();
+
+    @Override
+    public T execute(CommandContext commandContext) {
+        try {
+            return executeInternal(commandContext);
+        } catch (WorkflowEngineException e) {
+            throw e;
+        } catch (Exception e) {
+            throw new WorkflowEngineException(ENGINE_EXEC_EXCEPTION);
+        }
+    }
+
+    public T executeInternal(CommandContext commandContext) {
+        return null;
+    }
 }
diff --git a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomApproveTaskAsyncCmd.java b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomApproveTaskAsyncCmd.java
index 50a9591b5..f7bccb3ab 100644
--- a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomApproveTaskAsyncCmd.java
+++ b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomApproveTaskAsyncCmd.java
@@ -43,7 +43,7 @@ public class CustomApproveTaskAsyncCmd extends AbstractCommand<String> implement
     }
 
     @Override
-    public String execute(CommandContext commandContext) {
+    public String executeInternal(CommandContext commandContext) {
         ProcessEngineConfigurationImpl processEngineConfiguration =
                 CommandContextUtil.getProcessEngineConfiguration(commandContext);
         HistoricTaskInstanceQuery taskQuery =
diff --git a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomRejectionTaskAsyncCmd.java b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomRejectionTaskAsyncCmd.java
index 9b0f03fef..090886159 100644
--- a/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomRejectionTaskAsyncCmd.java
+++ b/workflow-engine-core/src/main/java/cn/axzo/workflow/core/engine/cmd/CustomRejectionTaskAsyncCmd.java
@@ -38,7 +38,7 @@ public class CustomRejectionTaskAsyncCmd extends AbstractCommand<String> impleme
     }
 
     @Override
-    public String execute(CommandContext commandContext) {
+    public String executeInternal(CommandContext commandContext) {
         ProcessEngineConfigurationImpl processEngineConfiguration =
                 CommandContextUtil.getProcessEngineConfiguration(commandContext);
         HistoricTaskInstanceQuery taskQuery =