Abstract: The goaf treatment and pillar recovery are related with productive continuity and safety.In view of existing situation that large and high-grade pillars are left over in the production stage 550 in Qingtonggou Mercury-antimony Mine，firstly artificial pillars are used to support the goaf.According to the empirical formula，the construction was designed.Through the stability analysis，the result is seen rational and feasible.Secondly，the intrinsic point-pillars and partial point-pillars of the large pillars are reserved to support the roof.Finally，back-filling fills the whole goaf.This method ensuresd that the workers safety in the work processes and winned over the high-grade pillars recovered entirely as possible.

Key words: Remaining pillar, Goaf, Artificial pillar, Point-pillar, Filling