A GOA device and a gate driving circuit are provided. A pull-up control unit and a bootstrap unit sequentially control a control node of an Nth stage GOA unit to be pulled up to a first high voltage level and a second high voltage level. A pull-up unit outputs a gate driving signal according to a change of a voltage level of the control node and a stage transfer signal of the Nth stage GOA unit. As such, a pulse width of the gate driving signal is increased, and the problem that the charging ability is not sufficient can be solved.