The present invention provides a display device and a control method thereof, a gesture recognition method and a head-mounted display device. The display device of the present invention comprises a display unit, an open type head-mounted display, an image acquisition unit and a gesture recognition unit. The control method thereof comprises steps of: providing, by the open type head-mounted display, a virtual 3D control picture to a user; acquiring, by the image acquisition unit, an image of action of touching the virtual 3D control picture by the user; judging, by the gesture recognition unit, a touch position of the user in the virtual 3D control picture according to the image acquired by the image acquisition unit, and sending a control instruction corresponding to the touch position to a corresponding execution unit. The present invention may be used for controlling a display device.