Abstract: Strip mining method can effectively control the settlement of industrial square, protect the shaft and shaft station as well as others inking and driving engineering maximumly, so it has been widely applied in the coal pillar recovery.In this paper, on the basis of engineering analogy method, coal pillar width is obtained by using the ultimate strength theory.Overall considering the stability of coal pillar and the recovery rate of resources, this paper optimizes the design method of strip mining method and provides a new way of thinking in the coal pillar recovery.