Xianglushan Tungsten Mine is a gently inclined medium-thick and large ore body. The original mining method of shallow hole shrinkage with retained-point pillar is open stope method, which has low production efficiency and high roof management intensity. In order to improve the safety operation conditions and production efficiency of the mine, the application of pre-cut roof protection and downward large diameter deep hole mining followed by backfilling mining method was carried out in W4 stope of panel II of the mine. After the application of the new mining technology, the stope production capacity can be increased from 80 d/t to 250 t/d, and the cutting volume can be reduced from 6.7 m/kt to 3.2 m/kt. The application of the new technology not only ensures the safety of mining, but also significantly improves the economic benefits of enterprises.