Field investigations show that slope supported with framed anchor has better effect on resisting earthquake than slope supported with anchor-shotcrete and active protection nets. The pseudo-static method is used to analyze the stability of anchored slopes in the Wenchuan earthquake regions. The results show that the safety factor increases with the increasing anchor length.  A dynamic numerical simulation model of anchored slope is established based on the FLAC^3D program, and the influence of bolt length on dynamic response of anchored slopes is analyzed.