diff --git a/backend/roomroot-jwgl/src/main/java/com/roomroot/jwgl/service/impl/StudentRecordsServiceImpl.java b/backend/roomroot-jwgl/src/main/java/com/roomroot/jwgl/service/impl/StudentRecordsServiceImpl.java
index f9b0b77c0..4eea3e3be 100644
--- a/backend/roomroot-jwgl/src/main/java/com/roomroot/jwgl/service/impl/StudentRecordsServiceImpl.java
+++ b/backend/roomroot-jwgl/src/main/java/com/roomroot/jwgl/service/impl/StudentRecordsServiceImpl.java
@@ -720,11 +720,76 @@ public class StudentRecordsServiceImpl implements StudentRecordsService {
             throw new RuntimeException("学员队编号已存在：" + entity.getXydbh());
         }
         xydbMapper.insert(entity);
+        createPeriodIfAbsent(entity);
+    }
+
+    /**
+     * 若班次还没有学员队期记录则补建一条，保证 学员队表(XYDB) 与 学员队期表(XYDQB) 一致。
+     * 期名沿用既有数据的命名规律：学员队名称 + "期"。
+     */
+    private void createPeriodIfAbsent(XYDB team) {
+        if (team == null || team.getXydbh() == null || team.getXydbh().isEmpty()) {
+            return;
+        }
+        Long cnt = xydqbMapper.selectCount(new LambdaQueryWrapper<XYDQB>()
+                .eq(XYDQB::getXydbh, team.getXydbh()));
+        if (cnt != null && cnt > 0) {
+            return;
+        }
+        XYDQB period = new XYDQB();
+        period.setBh(UuidUtil.getUUID());
+        period.setXydbh(team.getXydbh());
+        String teamName = isNotBlank(team.getXydmc()) ? team.getXydmc() : team.getXydbh();
+        period.setMc(teamName + "期");
+        period.setZxzt(1);
+        period.setYxzc(1);
+        period.setXhqz(nextXhqz(team));
+        period.setXhws(11);
+        xydqbMapper.insert(period);
+    }
+
+    /**
+     * 生成学号前缀：班次年度(4位) + 两位递增序号，跳过已占用前缀。
+     */
+    private String nextXhqz(XYDB team) {
+        int year = resolveTeamYear(team);
+        String prefix = String.valueOf(year);
+        List<XYDQB> rows = xydqbMapper.selectList(new LambdaQueryWrapper<XYDQB>()
+                .select(XYDQB::getXhqz)
+                .likeRight(XYDQB::getXhqz, prefix));
+        int max = 0;
+        for (XYDQB row : rows) {
+            String xhqz = row.getXhqz();
+            if (xhqz == null || xhqz.length() <= prefix.length()) {
+                continue;
+            }
+            String tail = xhqz.substring(prefix.length());
+            if (tail.chars().allMatch(Character::isDigit)) {
+                max = Math.max(max, Integer.parseInt(tail));
+            }
+        }
+        return prefix + String.format("%02d", max + 1);
+    }
+
+    /** 班次年度：优先从年级文本解析（如 "2026级"），其次入学日期年份，兜底当前年 */
+    private int resolveTeamYear(XYDB team) {
+        if (isNotBlank(team.getNj())) {
+            java.util.regex.Matcher m = java.util.regex.Pattern.compile("\\d{4}").matcher(team.getNj());
+            if (m.find()) {
+                return Integer.parseInt(m.group());
+            }
+        }
+        if (team.getRxrq() != null) {
+            return team.getRxrq().getYear();
+        }
+        return java.time.LocalDate.now().getYear();
     }
 
     @Override
     @Transactional
     public void deleteTeam(String xydbh) {
+        // 级联删除学员队期记录，保持 XYDB 与 XYDQB 一致
+        xydqbMapper.delete(new LambdaQueryWrapper<XYDQB>().eq(XYDQB::getXydbh, xydbh));
         xydbMapper.deleteById(xydbh);
     }
 
@@ -734,7 +799,24 @@ public class StudentRecordsServiceImpl implements StudentRecordsService {
         if (entity.getXydbh() == null || entity.getXydbh().isEmpty()) {
             throw new RuntimeException("学员队编号不能为空");
         }
+        XYDB old = xydbMapper.selectById(entity.getXydbh());
         xydbMapper.updateById(entity);
+        createPeriodIfAbsent(entity);
+        // 班次改名时，仅同步自动命名（"队名+期"）的队期记录，不动手工改过的名称
+        if (old != null && isNotBlank(entity.getXydmc())
+                && !entity.getXydmc().equals(old.getXydmc())) {
+            String autoName = (isNotBlank(old.getXydmc()) ? old.getXydmc() : old.getXydbh()) + "期";
+            List<XYDQB> periods = xydqbMapper.selectList(new LambdaQueryWrapper<XYDQB>()
+                    .eq(XYDQB::getXydbh, entity.getXydbh()));
+            for (XYDQB period : periods) {
+                if (autoName.equals(period.getMc())) {
+                    XYDQB patch = new XYDQB();
+                    patch.setBh(period.getBh());
+                    patch.setMc(entity.getXydmc() + "期");
+                    xydqbMapper.updateById(patch);
+                }
+            }
+        }
     }
 
     @Override
@@ -770,6 +852,7 @@ public class StudentRecordsServiceImpl implements StudentRecordsService {
                 continue;
             }
             xydbMapper.insert(entity);
+            createPeriodIfAbsent(entity);
             count++;
         }
         return count;