Abstract: With the mining depth increasing of Sanshandao Gold Mine，increase of geo-stress，geo-temperature，water inflow and water purification pressure make the damage and deformation of surrounding rock more and more serious.A series of problems outstand，such as occurrence probability increase of roof falling，wall caving and other sudden engineering accidents，deterioration of work environment and a sharp increase of production costs.In order to timely grasp the surrounding rock stability in deep mining，three instruments of tunnel convergence measurement，two multi-point extensometers and four borehole stress meters are arranged in -555 m horizontal tunnel，to respectively monitor surface displacement，deep displacement and surrounding rock pressure of tunnel.By collecting and analyzing monitoring data，the stability of tunnel country rock is accurately evaluated in time，which provides a scientific guide for safe and efficient production of the mine.

Key words: Monitoring, Tunnel, Deep mining, Surrounding rock stability