The invention provides a level offset unit, a level offset circuit and drive method, and a grid drive circuit, belonging to the display technology field. The level offset unit comprises a logic control module, an output module, an output control module and a feedback module, wherein the logic control module is connected to a start up power supply, a driving power supply, an input signal terminal and an output module; the feedback module is connected to an enabling signal terminal, a signal output terminal and an output control module; the output control module is connected to the output module and the driving power supply; and the output module is connected to the signal output terminal. The feedback module of the level offset unit controls the output module to start up and switch off through the enabling terminal and the signal input terminal. If the signals outputted by the two level offset units are short circuited, the feedback module controls the output control module of the level offset circuit to be disconnected, so that the output module outputs the high impedance so as to avoid the burning of the gate driver, which causes the potential safety hazard.