diff --git a/game-server/app/servers/guild/handler/gvgHandler.ts b/game-server/app/servers/guild/handler/gvgHandler.ts
index cab9e24e3..76a027f2d 100644
--- a/game-server/app/servers/guild/handler/gvgHandler.ts
+++ b/game-server/app/servers/guild/handler/gvgHandler.ts
@@ -12,7 +12,7 @@ import { GVGUserItemModel } from "../../../db/GVGUserItem";
 import { GVGUserTaskModel } from "../../../db/GVGUserTask";
 import { GVG } from "../../../pubUtils/dicParam";
 import { RoleModel } from "../../../db/Role";
-import { addGVGTechActive, calFighterContribute, calProducerContribute, checkPreTech, checkTechIsIng, getDailyLoginReward, getMyContribute, pushTechChange, sendUngotBoxReward } from "../../../services/gvg/gvgPrepareService";
+import { addGVGTechActive, calFighterContribute, calProducerContribute, checkPreTech, checkTechIsIng, checkTechProgress, getDailyLoginReward, getMyContribute, pushTechChange, pushTechRollback, sendUngotBoxReward } from "../../../services/gvg/gvgPrepareService";
 import { GVGUserDailyDataModel } from "../../../db/GVGUserDailyData";
 import { gameData } from "../../../pubUtils/data";
 import { lockLeagueData } from "../../../services/redLockService";
@@ -400,6 +400,53 @@ export class GVGHandler {
          });
     }
 
+    // 千机阁解锁
+    async rollbackTech(msg: { techId: number }, session: BackendSession) {
+        const roleId = session.get('roleId');
+        const roleName = session.get('roleName');
+        const guildCode = session.get('guildCode');
+        const { techId } = msg;
+
+        let { configId, period } = getGVGPeriodData();
+        if(period != GVG_PERIOD.PREPARE) return resResult(STATUS.GVG_NOT_PREPARE_PERIOD);
+
+        const dicTech = gameData.gvgTech.get(techId);
+        if(!dicTech) return resResult(STATUS.DIC_DATA_NOT_FOUND);
+
+        const myLeague = await GVGLeagueModel.findLeagueByGuild(guildCode);
+        if(!myLeague) return resResult(STATUS.GVG_LEAGUE_NOT_EXIST);
+
+        // 权限
+        const checkAuth = await checkLeagueAuth(roleId, myLeague, LEAGUE_MANAGE_TYPE.UNLOCK_TECH);
+        if(!checkAuth) return resResult(STATUS.GVG_HAS_NO_AUTH);
+
+        // 并发锁
+        let res: any = await lockLeagueData(DATA_NAME.LEAGUE_TECH, myLeague.leagueCode);//加锁
+        if (!!res.err) return resResult(STATUS.REDLOCK_ERR);
+
+        let leaguePrepare = await GVGLeaguePrepareModel.findByLeague(configId, myLeague.leagueCode);
+
+        if(!checkTechProgress(techId, leaguePrepare?.techQueue||[])) {
+            res.releaseCallback();
+            return resResult(STATUS.GVG_TECH_HAS_PROGRESS);
+        }
+
+        leaguePrepare = await GVGLeaguePrepareModel.rollbackTech(configId, myLeague.leagueCode, techId);
+        if(!leaguePrepare) {
+            res.releaseCallback();
+            return resResult(STATUS.GVG_TECH_QUEUECNT_MAX);
+        }
+
+        res.releaseCallback();
+
+        // 推送千机阁解锁消息
+        await pushTechRollback(myLeague.guildCodes, techId);
+
+        return resResult(STATUS.SUCCESS, {
+            queue: leaguePrepare?.techQueue||[]
+         });
+    }
+
     // 千机阁激活
     async activate(msg: { techId: number, battleFeats: number }, session: BackendSession) {
         const serverId = session.get('serverId');
diff --git a/game-server/app/services/gvg/gvgPrepareService.ts b/game-server/app/services/gvg/gvgPrepareService.ts
index e1e09d899..2d333b69f 100644
--- a/game-server/app/services/gvg/gvgPrepareService.ts
+++ b/game-server/app/services/gvg/gvgPrepareService.ts
@@ -40,6 +40,11 @@ export function checkTechIsIng(techId: number, activeQueue: number[], techQueue:
     return techQueue.findIndex(cur => cur.id == techId) != -1 || activeQueue.indexOf(techId) != -1
 }
 
+export function checkTechProgress(techId: number, techQueue: Tech[]) {
+    let queue = techQueue.find(cur => cur.id == techId);
+    return queue && queue.progress == 0;
+}
+
 export function calProducerContribute(obj: { food: number, mineral: number, wood: number }) {
     let { food = 0, mineral = 0, wood = 0 } = obj||{};
     let ratio = decodeIdCntArrayStr(GVG.GVG_PRODUCE_GAME_RATIO, 1);
@@ -479,6 +484,14 @@ export async function pushTechChange(guildCodes: string[], isActive: boolean, id
     }
 }
 
+export async function pushTechRollback(guildCodes: string[], id: number) {
+    for(let guildCode of guildCodes) {
+        await sendMessageToGuildWithSuc(guildCode, PUSH_ROUTE.LEAGUE_TECH_ROLLBACK, {
+            id
+        });
+    }
+}
+
 export async function sendUngotBoxReward(configId: number, leagueCode: string, roleId: string, sid: string) {
     let { period } = getGVGPeriodData();
     if(period != GVG_PERIOD.BATTLE) return;
diff --git a/shared/consts/constModules/chatConst.ts b/shared/consts/constModules/chatConst.ts
index ad596cf0d..8d7ec8de8 100644
--- a/shared/consts/constModules/chatConst.ts
+++ b/shared/consts/constModules/chatConst.ts
@@ -195,6 +195,7 @@ export const PUSH_ROUTE = {
     LEAGUE_TECH_CHANGE : 'onGVGTechChange', // 千机阁科技变更
     LEAGUE_TECH_UNLOCK: 'onGVGTechUnlock', // 千机阁科技解锁
     LEAGUE_TECH_ACITVE: 'onGVGTechActive', // 千机阁科技激活
+    LEAGUE_TECH_ROLLBACK: 'onGVGTechRollback', // 千机阁科技回退
     GVG_TASK_UPDATE: 'onGVGTaskUpdate', // GVG任务更新
     GVG_TEAM_ATTACKED: 'onTeamAttacked', // 当队伍受到攻击
     GVG_MY_TEAM_ATTACKED: 'onMyTeamAttacked', // 当队伍受到攻击
diff --git a/shared/consts/statusCode.ts b/shared/consts/statusCode.ts
index 927e32087..72b41d62a 100644
--- a/shared/consts/statusCode.ts
+++ b/shared/consts/statusCode.ts
@@ -348,6 +348,7 @@ export const STATUS = {
     GVG_NOT_JOIN_LEAGUE: { code: 21341, simStr: '您未加入联军' },
     GVG_NOT_ENTER_CITY_TIME: { code: 21342, simStr: '您此时不可进入城池' },
     GVG_NOT_BATTLE_TIME: { code: 21343, simStr: '您此时只能进驻据点不可挑战' },
+    GVG_TECH_HAS_PROGRESS: { code: 21344, simStr: '该科技进度不为0' },
 
     // GVG征战中原
     GVG_VESTIGE_ERR: { code: 21350, simStr: '今日未开放该遗迹' },
diff --git a/shared/db/GVGLeaguePrepare.ts b/shared/db/GVGLeaguePrepare.ts
index 20ba7b813..d04211285 100644
--- a/shared/db/GVGLeaguePrepare.ts
+++ b/shared/db/GVGLeaguePrepare.ts
@@ -124,6 +124,11 @@ export default class GVGLeaguePrepare extends BaseModel {
         return result;
     }
 
+    public static async rollbackTech(configId: number, leagueCode: string, techId: number) {
+        const result: GVGLeaguePrepareType = await GVGLeaguePrepareModel.findOneAndUpdate({ configId, leagueCode }, { $pull: { techQueue: { id: techId } }, $inc: { techQueueCnt: -1 } }, { new: true }).lean();
+        return result;
+    }
+
     public static async addProgress(configId: number, leagueCode: string, techId: number, addProgress: number) {
         const result: GVGLeaguePrepareType = await GVGLeaguePrepareModel.findOneAndUpdate({ 
             configId, leagueCode, 'techQueue.id': techId