A shift register, comprising: an input unit, an output control unit, a first pull-down unit, a second pull-down unit, a reset unit, and a pull-down control unit, wherein: the input unit comprises a control terminal connected to a signal input terminal, a first terminal connected to a first voltage terminal, and a second terminal connected to a first node; the output control unit comprises a control terminal connected to the first node, a first terminal connected to a first clock signal terminal, and a second terminal connected to a signal output terminal; the first pull-down unit comprises a control terminal connected to a second node, a first terminal connected to the first node, and a second terminal connected to a compensation signal terminal; the second pull-down unit comprises a control terminal connected to the compensation signal terminal, a first terminal connected to the second node, and a second terminal connected to a second voltage terminal; the pull-down control unit comprises a first control terminal connected to the signal input terminal, a second control terminal connected to the first node, a first terminal connected to the second node, the second node being further connected to a second clock signal terminal, and a second terminal connected to the second voltage terminal; the first clock signal terminal and the second clock signal terminal being configured to input signals of opposite polarities in a scanning period in a frame, and each being configured to input a turn-off signal in a blanking period in a frame, the reset unit comprises a control terminal connected to a reset signal terminal, a first terminal connected to the first node, a second terminal connected to the second voltage terminal; the compensation signal terminal being configured to input a turn-off signal in the scanning period in a frame and to input a turn-on signal in the blanking period in a frame. an input unit, an output control unit, a first pull-down unit, a second pull-down unit, a reset unit, and a pull-down control unit, wherein: the input unit comprises a control terminal connected to a signal input terminal, a first terminal connected to a first voltage terminal, and a second terminal connected to a first node; the output control unit comprises a control terminal connected to the first node, a first terminal connected to a first clock signal terminal, and a second terminal connected to a signal output terminal; the first pull-down unit comprises a control terminal connected to a second node, a first terminal connected to the first node, and a second terminal connected to a compensation signal terminal; the second pull-down unit comprises a control terminal connected to the compensation signal terminal, a first terminal connected to the second node, and a second terminal connected to a second voltage terminal; the pull-down control unit comprises a first control terminal connected to the signal input terminal, a second control terminal connected to the first node, a first terminal connected to the second node, the second node being further connected to a second clock signal terminal, and a second terminal connected to the second voltage terminal; the first clock signal terminal and the second clock signal terminal being configured to input signals of opposite polarities in a scanning period in a frame, and each being configured to input a turn-off signal in a blanking period in a frame, the reset unit comprises a control terminal connected to a reset signal terminal, a first terminal connected to the first node, a second terminal connected to the second voltage terminal; the compensation signal terminal being configured to input a turn-off signal in the scanning period in a frame and to input a turn-on signal in the blanking period in a frame. the input unit comprises a control terminal connected to a signal input terminal, a first terminal connected to a first voltage terminal, and a second terminal connected to a first node; the output control unit comprises a control terminal connected to the first node, a first terminal connected to a first clock signal terminal, and a second terminal connected to a signal output terminal; the first pull-down unit comprises a control terminal connected to a second node, a first terminal connected to the first node, and a second terminal connected to a compensation signal terminal; the second pull-down unit comprises a control terminal connected to the compensation signal terminal, a first terminal connected to the second node, and a second terminal connected to a second voltage terminal; the pull-down control unit comprises a first control terminal connected to the signal input terminal, a second control terminal connected to the first node, a first terminal connected to the second node, the second node being further connected to a second clock signal terminal, and a second terminal connected to the second voltage terminal; the first clock signal terminal and the second clock signal terminal being configured to input signals of opposite polarities in a scanning period in a frame, and each being configured to input a turn-off signal in a blanking period in a frame, the reset unit comprises a control terminal connected to a reset signal terminal, a first terminal connected to the first node, a second terminal connected to the second voltage terminal; the compensation signal terminal being configured to input a turn-off signal in the scanning period in a frame and to input a turn-on signal in the blanking period in a frame.