The invention relates to a multifunctional projection device, which comprise a light source, a lens set, an image element, a projection lens and at least one image deceptive device which can lead projection image out of focus, and a image rocking mechanism which can ensure the projection image to rock; wherein, the lens set, the image element, the projection lens and the deceptive device(s) are mounted on a light path in turn; the image deceptive device can be arranged in front of the projection lens and/or between the image element and the projection lens; the image rocking mechanism is connected with the image element. The image deceptive device and the image rocking mechanism controlled by a certain program are used for carrying out the processes of continuous intensity regulation, out-of-focus and rocking on continuously displayed projection image so as to lead spectators to have visual fatigue to achieve the effect of rapid inducing sleep. The device thereof is simple in structure and convenient in operation, has fine hypnotic function, effectively helps patients alleviate fatigue, eases pressure, and has multiple functions, for example, the device can be used as a projection planetarium, common projector and the like, when a mechanism which can adjust projection angles at will is arranged on the device.