The invention discloses a GOA (gate driver on array) circuit, an array substrate, a display device and a driving method. The GOA circuit comprises a clock signal input line and more than two cascaded GOA units. Every GOA unit comprises a selection signal output subunit and a selection subunit; the selection signal output subunit is used for receiving source signals and outputting selection signals according to the source signals; the selection subunit receives the selection signals and N clock signals and outputs the received clock signals according to the selection signals; the number of the clock signal input lines is at least N, and the clock signal input lines are used for inputting the clock signals to the selection subunits; and N is an integer larger than 2. The GOA circuit, the array substrate and a gate driving structure of the display device are ingenious, and occupied spaces are small. According to the driving method, single-point polarity inversion can be achieved, and contradiction between display effects and energy consumption can be adjusted extremely well.