diff --git a/src/main/java/com/budwk/app/zhgh/activity/family/service/impl/FamilyActivityServiceImpl.java b/src/main/java/com/budwk/app/zhgh/activity/family/service/impl/FamilyActivityServiceImpl.java
index e68f734..002d45a 100644
--- a/src/main/java/com/budwk/app/zhgh/activity/family/service/impl/FamilyActivityServiceImpl.java
+++ b/src/main/java/com/budwk/app/zhgh/activity/family/service/impl/FamilyActivityServiceImpl.java
@@ -755,7 +755,25 @@ public class FamilyActivityServiceImpl extends BaseServiceImpl<FamilyActivity> i
 		if (currentSignUp == null || !Objects.equals(currentSignUp.getId(), familyUser.getId())) {
 			throw new BaseException("未找到本人在该课程的报名信息");
 		}
-		validateUpdateSignUpData(familyUser, currentSignUp);
+		FamilyCourse course = dao().fetch(FamilyCourse.class, familyUser.getCourseId());
+		if (course == null || !Objects.equals(course.getActivityId(), currentSignUp.getActivityId())) {
+			throw new BaseException("报名课程不存在或已变更");
+		}
+		FamilyActivity activity = dao().fetch(FamilyActivity.class, course.getActivityId());
+		validateSignUpTimeAndScope(activity, currentUserId, true);
+		FamilyType type = dao().fetch(FamilyType.class, course.getCourseType());
+		if (type == null) {
+			throw new BaseException("报名类型不存在或已变更");
+		}
+		validateUpdateSignUpData(familyUser, currentSignUp, course, activity, type);
+
+		// 正式报名和候补转正都占正式名额，按类型计人数以识别本次修改实际释放的名额。
+		int oldFamilyNumber = Lang.isNotEmpty(currentSignUp.getMobileColumnsValue())
+				? currentSignUp.getMobileColumnsValue().size() : 0;
+		boolean releasedFormalSlots = (Objects.equals(currentSignUp.getState(), 1)
+				|| Objects.equals(currentSignUp.getState(), 3))
+				&& getFamilyContribution(type, oldFamilyNumber)
+				> getFamilyContribution(type, familyUser.getMobileColumnsValue().size());
 
 		String oldActivityCourseId = currentSignUp.getActivityCourseId();
 		currentSignUp.setMobile(familyUser.getMobile());
@@ -763,26 +781,21 @@ public class FamilyActivityServiceImpl extends BaseServiceImpl<FamilyActivity> i
 		currentSignUp.setActivityCourseId(familyUser.getActivityCourseId());
 		dao().update(currentSignUp);
 		syncUpdatedUserCourse(currentSignUp, oldActivityCourseId);
+		// 保存减员及其时段记录后，在同一课程锁内按最新占用人数执行递补。
+		if (releasedFormalSlots && Objects.equals(course.getReserveMode(), 2) && isWithinSignUpTime(activity)) {
+			promoteWaitingUsers(course);
+		}
 		return currentSignUp;
 	}
 
 	/**
-	 * 修改按钮预校验与最终保存共用本方法，确保两处业务规则不会产生偏差。
+	 * 保存修改前校验家属信息、报名名额与时段，人数及冲突校验须排除本人的原记录。
 	 */
-	private void validateUpdateSignUpData(FamilyUser familyUser, FamilyUser currentSignUp) {
-		FamilyCourse course = dao().fetch(FamilyCourse.class, familyUser.getCourseId());
-		if (course == null || !Objects.equals(course.getActivityId(), currentSignUp.getActivityId())) {
-			throw new BaseException("报名课程不存在或已变更");
-		}
-		FamilyActivity activity = dao().fetch(FamilyActivity.class, course.getActivityId());
-		validateSignUpTimeAndScope(activity, SecurityUtil.getUserId(), true);
+	private void validateUpdateSignUpData(FamilyUser familyUser, FamilyUser currentSignUp,
+			FamilyCourse course, FamilyActivity activity, FamilyType type) {
 		if (!Boolean.TRUE.equals(course.getCourseIsLimitApply())) {
 			familyUser.setActivityCourseId(null);
 		}
-		FamilyType type = dao().fetch(FamilyType.class, course.getCourseType());
-		if (type == null) {
-			throw new BaseException("报名类型不存在或已变更");
-		}
 
 		if (Lang.isEmpty(familyUser.getMobileColumnsValue())) {
 			throw new BaseException("请填写" + activity.getKeyWord() + "信息");