The invention relates to a door-opening device for a domestic appliance (1), which is designed for automatically opening a door (6) of the domestic appliance (1) and has a drive motor (25) which is coupled mechanically to a door hook (34) via an actuating means, wherein the drive motor (25) is coupled to a cam element (28) of the actuating means, the cam element having a helical camway (29), against which butts a transmission element (32) of the actuating means, this transmission element being coupled to the door hook (35) and making it possible to transmit the movement of the cam element (28) to the door hook (34). The invention also relates to an oven (1) with a door-opening device (24).