Abstract: Ground environment is damaged and the serious mining subsidence calamity came out with the sustained growth of coal output suppouted by common mining technology.And lot of coal resource is abandoned because of the lower extraction ratio technologies which are for protecting the ground structure like village and small towns.ln view of the present situation,the interval and total wider strip mining technology with stowing caving zone is put out from science angle.The paper analyzed the conceptions of the method,pillars'stress situation and law of overlying rock subsidence in the course of mining.As a result,it can slow down the surface subaidence,protect the surface environment,and solve the problem of mining under villages when the coal extraction in deeper level.However there are many detail things which are to be researched about this technology.And it has large advanntage for perfecting the theories and technologies about mine further.