diff --git a/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/impl/EnrollmentPlanCompletionAdapter.java b/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/impl/EnrollmentPlanCompletionAdapter.java
index 26f3680a5..7ffbf910e 100644
--- a/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/impl/EnrollmentPlanCompletionAdapter.java
+++ b/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/impl/EnrollmentPlanCompletionAdapter.java
@@ -38,10 +38,82 @@ public class EnrollmentPlanCompletionAdapter implements PlanEnrollmentCompletion
     @Autowired(required = false)
     private AccessAuthorizationOrchestrator accessAuthorizationOrchestrator;
 
+    @Override
+    public void precheckCompletion(String planId)
+    {
+        List<java.util.Map<String, Object>> stats = trainEnrollmentService.selectEnrollmentCompletionStatsByPlanId(planId);
+        int status0Waiting = 0;
+        int status1Reported = 0;
+        int status2Leave = 0;
+        int status3Abandoned = 0;
+        int status4Completed = 0;
+        int integrityErrorCount = 0;
+
+        if (stats != null)
+        {
+            for (java.util.Map<String, Object> map : stats)
+            {
+                Object stObj = map.get("enrollmentStatus") != null ? map.get("enrollmentStatus") : map.get("enrollment_status");
+                int st = stObj instanceof Number ? ((Number) stObj).intValue() : 0;
+                Object repObj = map.get("hasReport") != null ? map.get("hasReport") : map.get("has_report");
+                int hasRep = repObj instanceof Number ? ((Number) repObj).intValue() : 0;
+
+                if (st == 0)
+                {
+                    status0Waiting++;
+                }
+                else if (st == 1)
+                {
+                    status1Reported++;
+                    if (hasRep == 0)
+                    {
+                        integrityErrorCount++;
+                    }
+                }
+                else if (st == 2)
+                {
+                    status2Leave++;
+                }
+                else if (st == 3)
+                {
+                    status3Abandoned++;
+                }
+                else if (st == 4)
+                {
+                    status4Completed++;
+                }
+            }
+        }
+
+        if (status0Waiting > 0 || status2Leave > 0 || integrityErrorCount > 0)
+        {
+            StringBuilder msg = new StringBuilder("计划暂不能结训：");
+            List<String> reasons = new java.util.ArrayList<>();
+            if (status0Waiting > 0)
+            {
+                reasons.add("待报到 " + status0Waiting + " 人 (WAITING_REPORT_ENROLLMENTS_EXIST)");
+            }
+            if (status2Leave > 0)
+            {
+                reasons.add("请假 " + status2Leave + " 人 (LEAVE_ENROLLMENTS_REQUIRE_RESOLUTION)");
+            }
+            if (integrityErrorCount > 0)
+            {
+                reasons.add("已报到缺失报到单异常 " + integrityErrorCount + " 人 (REPORTED_WITHOUT_REPORT_INTEGRITY_ERROR)");
+            }
+            msg.append(String.join("，", reasons)).append("。请先处理后再结训。");
+            log.warn("计划结训预检拦截: planId={}, 原因={}", planId, msg.toString());
+            throw new com.ruoyi.common.exception.ServiceException(msg.toString());
+        }
+    }
+
     @Override
     @Transactional(propagation = Propagation.MANDATORY, rollbackFor = Exception.class)
     public void completeEnrollments(String planId, String operator, Date completeTime)
     {
+        // 结训预检 (All-or-Nothing 守卫)
+        precheckCompletion(planId);
+
         log.info("执行计划结训学员状态联动归档: planId={}, operator={}, completeTime={}", planId, operator, completeTime);
         int updatedRows = trainEnrollmentService.completeActiveEnrollmentsByPlanId(planId, operator, completeTime);
         log.info("计划结训学员归档完成: planId={}, 更新记录数={}", planId, updatedRows);
diff --git a/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/impl/PlanAppServiceImpl.java b/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/impl/PlanAppServiceImpl.java
index 6ef4af0e0..d60236095 100644
--- a/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/impl/PlanAppServiceImpl.java
+++ b/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/impl/PlanAppServiceImpl.java
@@ -158,6 +158,12 @@ public class PlanAppServiceImpl implements PlanAppService
             throw error(PlanErrorCode.PLAN_STATUS_LOCKED_MESSAGE, PlanErrorCode.PLAN_STATUS_LOCKED);
         }
 
+        // 结训预检 (All-or-Nothing 守卫：存在待报到、请假或报到数据异常学员时阻止结训)
+        for (PlanEnrollmentCompletionPort port : completionPorts)
+        {
+            port.precheckCompletion(planId);
+        }
+
         Date completeTime = DateUtils.getNowDate();
         TrainClassPlan statusUpdate = new TrainClassPlan();
         statusUpdate.setPlanId(planId);
diff --git a/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/port/PlanEnrollmentCompletionPort.java b/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/port/PlanEnrollmentCompletionPort.java
index 5c81c4689..43788e48e 100644
--- a/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/port/PlanEnrollmentCompletionPort.java
+++ b/RuoYi-Vue/ruoyi-train/src/main/java/com/ruoyi/train/service/port/PlanEnrollmentCompletionPort.java
@@ -8,5 +8,13 @@ import java.util.Date;
  */
 public interface PlanEnrollmentCompletionPort
 {
+    /**
+     * 结训前预检参训人员状态完整性 (All-or-Nothing Precheck)。
+     * 若存在 0:待报到、2:请假、或 1:已报到但无报到记录异常，抛出异常阻止结训。
+     *
+     * @param planId 培训班ID
+     */
+    default void precheckCompletion(String planId) {}
+
     void completeEnrollments(String planId, String operator, Date completeTime);
 }