The invention discloses a computer four-axis carpentry circular engraver rack which comprises an X guide rail base, a Y beam, a bottom beam and two stand columns. The bottom beam is mounted horizontally, the two stand columns are fixed at the left side and the right side of the bottom beam through bolts, two ends of the Y beam are fixed on the top end of the left stand column and the top end of the right stand column through bolts, and the X guide rail base is fixed on the bottom beam through bolts. According to the computer four-axis carpentry circular engraver rack, components are connected and fixed through bolts, the equipment process of the rack needs no welding, and deformation is not easy to occur. Further, processing equipment of large machinery is not needed, and processing accuracy is improved.