Abstract: There are quantities of underground goaf in Tianmashan sulfur gold deposit，and lots of ore pillars are left in the goaf.In order to safely and effectively recover these parts of resources，through investigations on the geological environment and status of the mined-out area，and according to the ground pressure monitoring results，the numerical simulation method is adopted to demonstrate the new stoping scheme for the largest underground #1 ore pillar，which is implemented successfully.On the premise of ensuring the safety，good economic benefits with ore recovery of 82,000 t have been obtained，and the research provides experiences for the recovery of other pillars in this section as well.

Key words: Gob, Pillar, Numerical simulation, Stoping, Security