Abstract: There are often weak layer and broken zone in the rock mass of mine open-pit slope，and it is affected by rainfall and earthquake for a long time，which will cause the instability of mine slope.This will not only affect the normal production of the mine，but also may cause serious safety accidents.Taking Tongshan stope slope as an example，the effect of different treatment schemes on mine hidden danger slope was studyed. Taking Tongshan stope slope as an example，studies the effect of different treatment schemes on mine hidden danger slope.Under the influence of faults，the slope cracks and surface subsidence appear in the mine slope. In this paper，Two methods of slope cutting and load reduction and anchor bolt and cable reinforcement are adopted to control the slope.After the implementation of the two treatment schemes，the safety factor of the slope is significantly improved，and both of them meet the requirements of the code. Through the comparison of the two treatment schemes，it is concluded that the slope cutting and load reduction process is simple but will be limited by the site. The construction technology of anchor bolt and cable reinforcement is complex but the treatment effect is better and will not affect the stope status quo.

Key words: mine slope, slope reduction, bolt reinforcement, slope stability