Abstract: According to the actual production situation of Changcheng Minmetals in Inner Mongolia, aiming at the problem of coal mining under buildings, water bodies and railways, a set of continuous mining and continuous filling gravity filling process is designed, which is divided into two parts: "pulping" and " Gangue transportation ". The pulping station is controlled by computer for full-automatic production, and the running state of the system is monitored from time to time through computer image visualization technology. Secondly, the design, assembly, commissioning and run of the gravity filling process system are completed.Finally, the filling effect is analyzed, which proves that the continuous mining and continuous filling gravity flow filling technology is completely feasible in the filling mining of Changcheng Minmetals, realizes green mining, and can effectively solve the problem of coal mining under buildings, water bodies and railways of Great Wall Minmetals.