a gate driving unit arranged in a multi-stage cascade, wherein the gate driving unit comprises a pull-up control module, a pull-up node, a first output module, a second output module, a pull-down control module, a first pull-down module, a pull-down node, a second pull-down module, and a pull-down maintenance module;

wherein the pull-up control module is electrically connected to a first clock signal input terminal and the pull-up node, and the pull-up control module is configured to pull up a potential of the pull-up node under a control of a first clock signal input at the first clock signal input terminal;

wherein the first output module is electrically connected to a second clock signal input terminal, the pull-up node, and a current-stage scanning signal output terminal, the first output module is configured to output a current-stage scanning signal under a control of the potential of the pull-up node;

wherein the second output module is electrically connected to a third clock signal input terminal, the pull-up node, and a current-stage transmission signal output terminal, and the second output module is configured to output a current-stage transmission signal under the control of the potential of the pull-up node;

wherein the pull-down control module is electrically connected to the first clock signal input terminal and the pull-down node, and the pull-down control module is configured to pull up a potential of the pull-down node under a control of the first clock signal;

wherein the first pull-down module is electrically connected to the first clock signal input terminal, the pull-up node, and the pull-down node, and the first pull-down module is configured to pull the potential of the pull-down node down to a potential of the first clock signal under the control of the potential of the pull-up node;

wherein the second pull-down module is electrically connected to the current-stage scanning signal output terminal, the current-stage transmission signal output terminal, and the pull-down node, and the second pull-down module is configured to pull down a potential of the current-stage scanning signal and the potential of the current-stage transmission signal under the control of the potential of the pull-down node;

wherein the pull-down maintenance module is electrically connected to the second clock signal input terminal, the pull-up node, and the pull-down node, and the pull-down maintenance module is configured to maintain the potential of the pull-up node at a low potential under a control of a second clock signal input from the second clock signal input terminal and the potential of the pull-down node.