Tablet computer with projection function

The utility model discloses a tablet computer with a projection function. The tablet computer comprises a middle display touch screen and keys; a micro projector is arranged in the tablet computer; a round hole of a projector lens is formed at the left upper part of the front surface of the tablet computer; the projector lens is formed at the left upper part of the front surface of the tablet computer; the projector lens is coupled with the round hole; one end of the micro projector is connected with the projector lens, and the other end of the micro projector is electrically connected with a display of the tablet computer; and a thread rotary knob for adjusting focal length is formed in the round hole of the projector lens. The tablet computer with the projection function is convenient for a user needing the projector; and the user only needs to carry the tablet computer without carrying the projector.