diff --git a/src/main/java/com/yunhai/flowcenter/callback/CallbackDispatcher.java b/src/main/java/com/yunhai/flowcenter/callback/CallbackDispatcher.java
index d57fe52..bec6659 100644
--- a/src/main/java/com/yunhai/flowcenter/callback/CallbackDispatcher.java
+++ b/src/main/java/com/yunhai/flowcenter/callback/CallbackDispatcher.java
@@ -111,6 +111,11 @@ public class CallbackDispatcher {
             payload.put("bizId", instance.getBizId());
             payload.put("bizTitle", instance.getBizTitle());
             payload.put("occurredTime", LocalDateTime.now().format(TIME));
+            // 2026-09-20 信封升级：任务定位与操作人（均可空，办件级事件/历史重放体为 null——
+            // 契约见《子应用接入流程中心规范.md》§6.3/§6.4）
+            payload.put("taskId", event.getTaskId());
+            payload.put("operatorUserId", event.getOperatorId());
+            payload.put("operatorName", event.getOperatorName());
             Map<String, Object> data = new HashMap<>();
             if (event.getData() != null) {
                 data.putAll(event.getData());
diff --git a/src/main/java/com/yunhai/flowcenter/engine/FlowAdvanceService.java b/src/main/java/com/yunhai/flowcenter/engine/FlowAdvanceService.java
index 294ecf7..08f14ca 100644
--- a/src/main/java/com/yunhai/flowcenter/engine/FlowAdvanceService.java
+++ b/src/main/java/com/yunhai/flowcenter/engine/FlowAdvanceService.java
@@ -33,10 +33,12 @@ public class FlowAdvanceService {
      * @param edgeName 多出口节点所选出口（办理事件携带）；可空——兜底从该节点
      *                 最近一条已同意任务的 edge_name 列重放（推进在 AFTER_COMMIT 新事务重查，
      *                 事件传参只是快路径，落库的值才是权威）
+     * @param operator 本节点办理人（TASK_HANDLED 事件 data 穿透；推进产生的
+     *                 TASK_CREATED/COMPLETED 操作人信封字段来源），可空
      * @return 是否实际推进了
      */
     @Transactional(propagation = Propagation.REQUIRES_NEW)
-    public boolean tryAdvance(Long instanceId, String nodeId, String edgeName) {
+    public boolean tryAdvance(Long instanceId, String nodeId, String edgeName, FlowOperator operator) {
         FlwInstance instance = instanceRepository.findById(instanceId).orElse(null);
         if (instance == null
                 || instance.getStatus() != FlwEnums.InstanceStatus.APPROVING.getCode()) {
@@ -72,7 +74,7 @@ public class FlowAdvanceService {
                     .map(FlwTask::getEdgeName)
                     .orElse(null);
         }
-        flowEngine.continueAdvance(instance, def, nodeId, chosen);
+        flowEngine.continueAdvance(instance, def, nodeId, chosen, operator);
         instanceRepository.save(instance);
         return true;
     }
diff --git a/src/main/java/com/yunhai/flowcenter/engine/FlowEngine.java b/src/main/java/com/yunhai/flowcenter/engine/FlowEngine.java
index a7719cb..d89a74f 100644
--- a/src/main/java/com/yunhai/flowcenter/engine/FlowEngine.java
+++ b/src/main/java/com/yunhai/flowcenter/engine/FlowEngine.java
@@ -38,11 +38,11 @@ public class FlowEngine {
     private final AssigneeResolver assigneeResolver;
     private final ApplicationEventPublisher eventPublisher;
 
-    /** 发起后首推：从 START 激活（instance 已建好、status=10） */
+    /** 发起后首推：从 START 激活（instance 已建好、status=10）。operator=null：TASK_CREATED/COMPLETED 的操作人回退发起人 */
     public void startAdvance(FlwInstance instance, FlwDef def) {
         FlowDefModel model = parseModel(def);
         setCurrentNodes(instance, null);
-        advance(instance, model, model.start, null);
+        advance(instance, model, model.start, null, null);
     }
 
     /**
@@ -50,8 +50,10 @@ public class FlowEngine {
      * 单出边走唯一出边（旧定义逐字节兼容）；多出边按办理人选的出口名（edgeName，即办理按钮文案）
      * 选路——未命中时记录错误并保持节点在途，绝不静默走第一条边。
      * 分支上下文由 {@link BranchScope#keyOf} 从图上回溯推导（分支内串行链的中间节点无任务级分支标记）。
+     * operator=本节点办理人（TASK_CREATED/COMPLETED 操作人信封字段来源），由推进监听器从事件 data 穿透传入。
      */
-    public void continueAdvance(FlwInstance instance, FlwDef def, String fromNodeId, String edgeName) {
+    public void continueAdvance(FlwInstance instance, FlwDef def, String fromNodeId, String edgeName,
+                                FlowOperator operator) {
         FlowDefModel model = parseModel(def);
         FlowDefModel.Node node = model.nodeById(fromNodeId);
         List<FlowDefModel.Edge> outs = model.outEdges(fromNodeId);
@@ -73,26 +75,29 @@ public class FlowEngine {
         FlowDefModel.Node nextNode = model.nodeById(next);
         if (FlowDefModel.TYPE_PARALLEL_JOIN.equals(nextNode.type)) {
             // 会签合并守门：标记本分支到达、全部到达才放行（直通无分支键时 JOIN 直通放行）
-            advance(instance, model, next, branchKey);
+            advance(instance, model, next, branchKey, operator);
         } else {
-            activate(instance, model, nextNode, branchKey);
+            activate(instance, model, nextNode, branchKey, operator);
         }
     }
 
     /**
      * 退回目标激活（FlowTaskService.returnBack 调用）：从 currentNodes 摘除来源节点，
      * 重新激活目标审批节点建新任务。沿用统一激活入口，split 幂等化后重入并行段不撞分支唯一约束。
+     * operator=退回人（重件 TASK_CREATED 操作人信封字段来源）。
      */
-    public void returnTo(FlwInstance instance, FlwDef def, String fromNodeId, String targetNodeId) {
+    public void returnTo(FlwInstance instance, FlwDef def, String fromNodeId, String targetNodeId,
+                         FlowOperator operator) {
         FlowDefModel model = parseModel(def);
         removeCurrentNode(instance, fromNodeId);
         FlowDefModel.Node target = model.nodeById(targetNodeId);
         String branchKey = BranchScope.keyOf(model, targetNodeId);
-        advance(instance, model, target.id, branchKey);
+        advance(instance, model, target.id, branchKey, operator);
     }
 
     /** 统一激活入口：含 JOIN 的到达标记与放行判断 */
-    private void advance(FlwInstance instance, FlowDefModel model, String nodeId, String branchKey) {
+    private void advance(FlwInstance instance, FlowDefModel model, String nodeId, String branchKey,
+                         FlowOperator operator) {
         FlowDefModel.Node node = model.nodeById(nodeId);
         if (FlowDefModel.TYPE_PARALLEL_JOIN.equals(node.type)) {
             if (branchKey != null) {
@@ -114,24 +119,25 @@ public class FlowEngine {
             if (outs.isEmpty()) {
                 return;
             }
-            activate(instance, model, model.nodeById(outs.get(0).to), null);
+            advance(instance, model, outs.get(0).to, null, operator);
             return;
         }
-        activate(instance, model, node, branchKey);
+        activate(instance, model, node, branchKey, operator);
     }
 
     /** 非 JOIN 节点激活 */
-    private void activate(FlwInstance instance, FlowDefModel model, FlowDefModel.Node node, String branchKey) {
+    private void activate(FlwInstance instance, FlowDefModel model, FlowDefModel.Node node, String branchKey,
+                          FlowOperator operator) {
         switch (node.type) {
             case FlowDefModel.TYPE_START: {
                 List<FlowDefModel.Edge> outs = model.outEdges(node.id);
                 if (!outs.isEmpty()) {
-                    advance(instance, model, outs.get(0).to, branchKey);
+                    advance(instance, model, outs.get(0).to, branchKey, operator);
                 }
                 break;
             }
             case FlowDefModel.TYPE_APPROVAL:
-                createTasks(instance, model, node);
+                createTasks(instance, model, node, operator);
                 addCurrentNode(instance, node.id);
                 break;
             case FlowDefModel.TYPE_PARALLEL_SPLIT: {
@@ -148,23 +154,26 @@ public class FlowEngine {
                         branch.setStatus(FlwEnums.BranchStatus.RUNNING.getCode());
                     }
                     branchRepository.save(branch);
-                    advance(instance, model, edge.to, edge.to);
+                    advance(instance, model, edge.to, edge.to, operator);
                 }
                 break;
             }
             case FlowDefModel.TYPE_END:
-                complete(instance);
+                complete(instance, operator);
                 break;
             default:
                 log.warn("[flow-center] 未知节点类型 {}（节点 {}），推进中止", node.type, node.id);
         }
     }
 
-    /** 建任务（ALL=每人一条；ANY=每人一条、任一人办理即放行）＋ 到达事件 */
-    private void createTasks(FlwInstance instance, FlowDefModel model, FlowDefModel.Node node) {
+    /** 建任务（ALL=每人一条；ANY=每人一条、任一人办理即放行）＋ 到达事件。operator=null 回退发起人 */
+    private void createTasks(FlwInstance instance, FlowDefModel model, FlowDefModel.Node node,
+                             FlowOperator operator) {
         List<AssigneeRef> assignees = assigneeResolver.resolve(instance.getSchId(), node);
         LocalDateTime now = LocalDateTime.now();
         LocalDateTime deadline = node.deadlineHours == null ? null : now.plusHours(node.deadlineHours);
+        FlowOperator op = operator != null ? operator
+                : FlowOperator.of(instance.getSubmitterId(), instance.getSubmitterName());
         for (AssigneeRef ref : assignees) {
             FlwTask task = new FlwTask();
             task.setInstanceId(instance.getId());
@@ -185,20 +194,23 @@ public class FlowEngine {
             data.put("totalTasks", assignees.size());
             data.put("doneTasks", 0);
             eventPublisher.publishEvent(FlowEvent.of(FlowEvent.Type.TASK_CREATED,
-                    instance.getId(), task.getId(), data));
+                    instance.getId(), task.getId(), op.getUserId(), op.getUserName(), data));
         }
     }
 
-    /** END 激活：办件完成、残留任务/分支失效、完成事件 */
-    private void complete(FlwInstance instance) {
+    /** END 激活：办件完成、残留任务/分支失效、完成事件。operator=null 回退发起人 */
+    private void complete(FlwInstance instance, FlowOperator operator) {
         instance.setStatus(FlwEnums.InstanceStatus.COMPLETED.getCode());
         instance.setFinishTime(LocalDateTime.now());
         setCurrentNodes(instance, null);
         taskRepository.invalidatePendingByInstance(instance.getId());
         branchRepository.invalidateRunningByInstance(instance.getId());
+        FlowOperator op = operator != null ? operator
+                : FlowOperator.of(instance.getSubmitterId(), instance.getSubmitterName());
         Map<String, Object> data = new HashMap<>();
         data.put("result", "APPROVED");
-        eventPublisher.publishEvent(FlowEvent.of(FlowEvent.Type.COMPLETED, instance.getId(), null, data));
+        eventPublisher.publishEvent(FlowEvent.of(FlowEvent.Type.COMPLETED, instance.getId(), null,
+                op.getUserId(), op.getUserName(), data));
     }
 
     public FlowDefModel parseModel(FlwDef def) {
diff --git a/src/main/java/com/yunhai/flowcenter/engine/FlowEvent.java b/src/main/java/com/yunhai/flowcenter/engine/FlowEvent.java
index 0692b69..ab396e6 100644
--- a/src/main/java/com/yunhai/flowcenter/engine/FlowEvent.java
+++ b/src/main/java/com/yunhai/flowcenter/engine/FlowEvent.java
@@ -59,14 +59,24 @@ public class FlowEvent {
     private final Long instanceId;
     /** 任务事件带 taskId（SUBMITTED 等办件级事件为 null） */
     private final Long taskId;
+    /** 操作人 id（谁导致本事件；回调信封提升为 operatorUserId）。可空：语义见《子应用接入流程中心规范.md》§6.4 */
+    private final Integer operatorId;
+    /** 操作人姓名快照。可空 */
+    private final String operatorName;
     /** 事件明细（result/opinion/rejectNode/task.created 的 n/m 等），可为空 */
     private final Map<String, Object> data;
 
     public static FlowEvent of(Type type, Long instanceId) {
-        return new FlowEvent(type, instanceId, null, new HashMap<>());
+        return new FlowEvent(type, instanceId, null, null, null, new HashMap<>());
     }
 
     public static FlowEvent of(Type type, Long instanceId, Long taskId, Map<String, Object> data) {
-        return new FlowEvent(type, instanceId, taskId, data == null ? new HashMap<>() : data);
+        return new FlowEvent(type, instanceId, taskId, null, null, data == null ? new HashMap<>() : data);
+    }
+
+    public static FlowEvent of(Type type, Long instanceId, Long taskId,
+                               Integer operatorId, String operatorName, Map<String, Object> data) {
+        return new FlowEvent(type, instanceId, taskId, operatorId, operatorName,
+                data == null ? new HashMap<>() : data);
     }
 }
diff --git a/src/main/java/com/yunhai/flowcenter/engine/FlowNodeAdvanceListener.java b/src/main/java/com/yunhai/flowcenter/engine/FlowNodeAdvanceListener.java
index 334de02..1ac00c3 100644
--- a/src/main/java/com/yunhai/flowcenter/engine/FlowNodeAdvanceListener.java
+++ b/src/main/java/com/yunhai/flowcenter/engine/FlowNodeAdvanceListener.java
@@ -31,9 +31,13 @@ public class FlowNodeAdvanceListener {
             return;
         }
         String edgeName = (String) event.getData().get("edgeName");
+        // 办理人随事件 data 穿透进推进链：新 TASK_CREATED/COMPLETED 的操作人信封字段（2026-09-20）
+        FlowOperator operator = FlowOperator.of(
+                (Integer) event.getData().get("assigneeId"),
+                (String) event.getData().get("assigneeName"));
         for (int attempt = 1; attempt <= 3; attempt++) {
             try {
-                advanceService.tryAdvance(event.getInstanceId(), nodeId, edgeName);
+                advanceService.tryAdvance(event.getInstanceId(), nodeId, edgeName, operator);
                 return;
             } catch (ObjectOptimisticLockingFailureException e) {
                 log.warn("[flow-center] 推进冲突重试 {}/3：instance={} node={}",
diff --git a/src/main/java/com/yunhai/flowcenter/engine/FlowOperator.java b/src/main/java/com/yunhai/flowcenter/engine/FlowOperator.java
new file mode 100644
index 0000000..d1e4d24
--- /dev/null
+++ b/src/main/java/com/yunhai/flowcenter/engine/FlowOperator.java
@@ -0,0 +1,23 @@
+package com.yunhai.flowcenter.engine;
+
+import lombok.Getter;
+import lombok.RequiredArgsConstructor;
+
+/**
+ * 推进链携带的操作人上下文（2026-09-20 信封升级）：任务办理后的放行推进在
+ * AFTER_COMMIT 新事务里由 FlowNodeAdvanceListener 重查执行，"是谁办的"只存在于
+ * TASK_HANDLED 事件 data 里，必须显式穿透 listener → tryAdvance → continueAdvance
+ * → activate → createTasks/complete，否则 TASK_CREATED/COMPLETED 事件拿不到操作人。
+ * null 语义=未穿透（发起直达路径），事件构建点回退办件发起人。
+ */
+@Getter
+@RequiredArgsConstructor
+public class FlowOperator {
+
+    private final Integer userId;
+    private final String userName;
+
+    public static FlowOperator of(Integer userId, String userName) {
+        return new FlowOperator(userId, userName);
+    }
+}
diff --git a/src/main/java/com/yunhai/flowcenter/service/FlowInstanceService.java b/src/main/java/com/yunhai/flowcenter/service/FlowInstanceService.java
index bae6da8..0bf9726 100644
--- a/src/main/java/com/yunhai/flowcenter/service/FlowInstanceService.java
+++ b/src/main/java/com/yunhai/flowcenter/service/FlowInstanceService.java
@@ -142,7 +142,8 @@ public class FlowInstanceService {
                 FlwEnums.TaskStatus.WITHDRAWN, instance.getSubmitterId(), instance.getSubmitterName());
         Map<String, Object> data = new HashMap<>();
         data.put("result", "WITHDRAWN");
-        eventPublisher.publishEvent(FlowEvent.of(FlowEvent.Type.WITHDRAWN, instanceId, null, data));
+        eventPublisher.publishEvent(FlowEvent.of(FlowEvent.Type.WITHDRAWN, instanceId, null,
+                instance.getSubmitterId(), instance.getSubmitterName(), data));
     }
 
     /**
@@ -230,7 +231,8 @@ public class FlowInstanceService {
         FlowDefModel model = flowEngine.parseModel(requireDef(instance.getDefId()));
         Map<String, Object> data = new HashMap<>();
         data.put("nodeSummary", FlowEngine.nodeSummary(model));
-        eventPublisher.publishEvent(FlowEvent.of(FlowEvent.Type.SUBMITTED, instance.getId(), null, data));
+        eventPublisher.publishEvent(FlowEvent.of(FlowEvent.Type.SUBMITTED, instance.getId(), null,
+                instance.getSubmitterId(), instance.getSubmitterName(), data));
     }
 
     /** 代发起结果值对象 */
diff --git a/src/main/java/com/yunhai/flowcenter/service/FlowTaskService.java b/src/main/java/com/yunhai/flowcenter/service/FlowTaskService.java
index 96fbb9e..e397b50 100644
--- a/src/main/java/com/yunhai/flowcenter/service/FlowTaskService.java
+++ b/src/main/java/com/yunhai/flowcenter/service/FlowTaskService.java
@@ -6,6 +6,7 @@ import com.yunhai.flowcenter.engine.BranchScope;
 import com.yunhai.flowcenter.engine.FlowDefModel;
 import com.yunhai.flowcenter.engine.FlowEvent;
 import com.yunhai.flowcenter.engine.FlowEngine;
+import com.yunhai.flowcenter.engine.FlowOperator;
 import com.yunhai.flowcenter.entity.FlwDef;
 import com.yunhai.flowcenter.entity.FlwInstance;
 import com.yunhai.flowcenter.entity.FlwTask;
@@ -97,7 +98,7 @@ public class FlowTaskService {
             data.put("edgeName", chosenEdge);
         }
         eventPublisher.publishEvent(FlowEvent.of(FlowEvent.Type.TASK_HANDLED,
-                instance.getId(), taskId, data));
+                instance.getId(), taskId, task.getAssigneeId(), task.getAssigneeName(), data));
         if (!approved) {
             rejectFlow(instance, task, opinion);
         } else if (FlowDefModel.COUNTERSIGN_ANY.equals(countersignOf(task))) {
@@ -163,7 +164,7 @@ public class FlowTaskService {
         data.put("rejectTaskId", task.getId());
         data.put("opinion", opinion);
         eventPublisher.publishEvent(FlowEvent.of(FlowEvent.Type.REJECTED,
-                instance.getId(), task.getId(), data));
+                instance.getId(), task.getId(), task.getAssigneeId(), task.getAssigneeName(), data));
     }
 
     /**
@@ -199,7 +200,8 @@ public class FlowTaskService {
             throw new BizException(ErrorCode.PARAM_ERROR, "任务已被办理或已失效，请刷新");
         }
         taskRepository.invalidatePendingByNode(instance.getId(), task.getNodeId());
-        flowEngine.returnTo(instance, def, task.getNodeId(), target);
+        flowEngine.returnTo(instance, def, task.getNodeId(), target,
+                FlowOperator.of(task.getAssigneeId(), task.getAssigneeName()));
         instanceRepository.save(instance);
 
         Map<String, Object> data = new HashMap<>();
@@ -291,7 +293,7 @@ public class FlowTaskService {
             data.put("opinion", reason);
         }
         eventPublisher.publishEvent(FlowEvent.of(FlowEvent.Type.TRANSFERRED,
-                instance.getId(), newTask.getId(), data));
+                instance.getId(), newTask.getId(), task.getAssigneeId(), task.getAssigneeName(), data));
     }
 
     /** 待办任务守卫：存在、本校、本人办理、仍待办 */
diff --git a/src/test/java/com/yunhai/flowcenter/callback/CallbackDispatchIT.java b/src/test/java/com/yunhai/flowcenter/callback/CallbackDispatchIT.java
index b708078..2e8cfe2 100644
--- a/src/test/java/com/yunhai/flowcenter/callback/CallbackDispatchIT.java
+++ b/src/test/java/com/yunhai/flowcenter/callback/CallbackDispatchIT.java
@@ -197,6 +197,16 @@ class CallbackDispatchIT extends FlowTestSupport {
             assertTrue(payload.get("instanceVersion").asInt() >= 1, "instanceVersion 应为办件乐观锁版本");
             assertNotNull(payload.get("eventId"));
             assertNotNull(payload.get("occurredTime"));
+            // 2026-09-20 信封升级：taskId + 操作人（发起直达链路 → 操作人=发起人快照）
+            assertEquals("201", payload.get("operatorUserId").asText(), "operatorUserId 应为发起人");
+            assertEquals("张三", payload.get("operatorName").asText(), "operatorName 应为发起人");
+            if ("flow.task.created".equals(event)) {
+                assertTrue(payload.get("taskId") != null && payload.get("taskId").isNumber(),
+                        "task.created 必带顶层 taskId");
+            } else if ("flow.submitted".equals(event)) {
+                assertTrue(payload.get("taskId") == null || payload.get("taskId").isNull(),
+                        "办件级事件 taskId 应为 null");
+            }
             // 签名断言：Base64(HmacSHA256(secret, ts.nonce.body))
             String expected = hmac(reg.getSecret(), r.timestamp, r.nonce, r.body);
             assertEquals(expected, r.signature, "推送必须带合法 X-Flw-Signature");