The invention provides a four-dimensional turntable, comprising a load plate, a support, a slide plate and a base arranged in sequence from top to bottom; The slide plate is slidably mounted on the base, and realizes horizontal linear movement through a horizontal direction pushing mechanism arranged on the base; A support frame is arranged on that slide plate, a support seat is arranged for sliding in the vertical direction of the support frame, and the support seat realizes linear movement through a vertical direction pushing mechanism arranged on the support frame; The support seat is horizontally rotated and provided with a pitch shaft, and the support seat is fixedly arranged on the pitch shaft; An azimuth shaft is vertically rotate and mounted on that support, and the top of the azimuth shaft is fixedly arrange at the center of the load plate. The invention creates the four-dimensional turntable, and adds two translational degrees of freedom, vertical and horizontal, on the basisof the two degrees of freedom of the existing two-dimensional turntable, so that the turntable has the position and angle adjustment functions of four degrees of freedom, and the universality of thecalibration and detection functions of the turntable is increased.