Abstract: As Xiao Ma village mine is a bankrupt mine, one five-coal seam eastern area is planned to be explored in order to prolong its service time. Because of the buildings, mining coal technology of solid filling is adopted to solve the mine goaf, with the purpose of well protecting the surface buildings, it can totally mine the left mine seam. Mining coal technology of solid filling is the inevitable trend of development of mining, with the use of it can improve mineral recovery, it can reduce the dilution rate of the land,full use of resources,and effectively control of the ground pressure,housing and surface subsidence and available in "Three Under" mining etc. To improve the environment in mining area, enhance the work efficiency, and achieve the real green mining.