The stability evaluation on superhigh slope behind the powerhouse of Geheyan hydroelectric station over Qingjiang River is made in this paper. Engineering geological condition

new tectonic movement

and deformation observation results for the slope are analyzed. Natural angles

stable angles

and design angles of the slope are compared with each other. Limit equilibrium analysis and finite element method are used for the stability evaluation of this slope. The engineering prevention and cure of landslip hazards are also proposed in this paper.