Abstract: Combined with the actual situation of the overlying strata in 24th mining area of Zhouyuanshan coal mine and based on theory of probability integral method,by using mining subsidence prediction system,the maximum subsidence value,curvature,horizontal displacement,inclination and the building damage grade of ground and surface key pretection building(coking plant,gangue power plant and Zhangjialong reservoir) were obtained under the condition of simultaneously mining No.1 and No.4 coal in 24th mining area of Zhouyuanshan mine.And building protective measures are proposed.