The invention discloses a filling method for mining. The filling method includes the first step of mining ore in a first-step mining field in a mine body, the second step of enabling filling slurries containing cementing materials to be filled into a gob of the first-step mining field, the third step of mining ore in a second-step mining field in the mine body, the fourth step of enabling the filling slurries containing the cementing materials to be filled into a gob of the second-step mining field and filling areas adjacent to a third-step mining field in the mine body, and enabling filling slurries without the cementing materials to be filled into other areas of the gob of the second-step mining field, and the fifth step of mining ore in the third-step mining field and enabling the filling slurries without the cementing materials to be filled into a gob of the third-step mining field. According to the filling method for mining, after the ore is mined, the filling areas, adjacent to the third-step mining field, of the second-step mining field are filled with the filling slurries containing the cementing materials, and other positions of the second-step mining field are filled with the filling slurries without the cementing materials. Therefore, according to the filling method for mining, the reasonable distribution of filling strength in the gobs can be guaranteed, the cementing filling proportion of the second-step mining field is reduced, the filling cost is low, and the ore can be mined to the largest degree, so the utilization rate of the resources is improved, and the economical benefits are improved.