Abstract: Using FEA software ADINA to make non-linear seismic response analysis to the multilayer frame pier tower of Runyang Yangtze River bridge. According to the longsapn suspension bridge cross feature and bridge tower displacement, this paper shows that the vibration form of suspension bridge frame bridge tower abides by certain law, the cross max displacement occurring on the top of bridge tower, the max bending moment occurring at the bottom of bridge tower, the max value occurring at the bridge tower beam column joints, plastic hinge will probably occur at the joint of bridge tower bottom and bridge tower beam column.