The invention discloses a shift register unit, a driving method, a gate driving circuit and a display device, and belongs to the field of display technology. The shift register unit comprises a control module, an output module and an angle cutting module; the control module is separately connected with an input signal end, a reset signal end, a control signal end, a first clock signal end, a pull-up node and an output end, and is used for controlling the potentials of the pull-up node and the output end; the output module is separately connected with a second clock signal end, the pull-up node and the output end, and is used for outputting a second clock signal from the second clock signal end to the output end; the angle cutting module is separately connected with the output end and a third clock signal end, and is used for outputting a third clock signal to the output end, in order to pull down the potential of signals output by the output end of the shift register unit at the second output phase, so as to retard the amplitude of gate voltage changes and avoid the phenomena of flicker, ghosts and the like appearing on pictures. The invention is used for displaying images.