diff --git a/workflow-engine-server/src/main/java/cn/axzo/workflow/server/controller/delegate/AbstractBpmnTaskAssigneeSelector.java b/workflow-engine-server/src/main/java/cn/axzo/workflow/server/controller/delegate/AbstractBpmnTaskAssigneeSelector.java
index 932405de8..8833a7101 100644
--- a/workflow-engine-server/src/main/java/cn/axzo/workflow/server/controller/delegate/AbstractBpmnTaskAssigneeSelector.java
+++ b/workflow-engine-server/src/main/java/cn/axzo/workflow/server/controller/delegate/AbstractBpmnTaskAssigneeSelector.java
@@ -234,7 +234,7 @@ public abstract class AbstractBpmnTaskAssigneeSelector implements BpmnTaskAssign
         }
         List<Long> personIds = assigners.stream()
                 .map(BpmnTaskDelegateAssigner::getPersonId)
-                .filter(e -> Objects.nonNull(e) && StringUtils.hasText(e) && !Objects.equals("null", e))
+                .filter(e -> Objects.nonNull(e) && StringUtils.hasText(e) && !Objects.equals("null", e) && !Objects.equals("system", e))
                 .map(Long::parseLong)
                 .distinct().collect(Collectors.toList());
         if (CollectionUtils.isEmpty(personIds)) {
@@ -244,7 +244,7 @@ public abstract class AbstractBpmnTaskAssigneeSelector implements BpmnTaskAssign
                 "根据 PersonId 查询自然人档案", "cn.axzo.karma.client.feign.FlowSupportApi.listPersons", refreshProperties, context, personIds)
                 .stream().collect(Collectors.toMap(PersonProfileResp::getId, Function.identity(), (s, t) -> s));
         assigners.forEach(assigner -> {
-            if (!StringUtils.hasText(assigner.getPersonId()) || Objects.equals("null", assigner.getPersonId())) {
+            if (!StringUtils.hasText(assigner.getPersonId()) || Objects.equals("null", assigner.getPersonId()) || Objects.equals("system", assigner.getPersonId())) {
                 return;
             }
             long personId = Long.parseLong(Optional.ofNullable(assigner.getPersonId()).orElse("-1"));