The utility model provides an automatic fruit cutting machine. The device comprises a case, two air cylinders are symmetrically installed on a bottom plate in the machine box. A piston rod of the aircylinder penetrates through a partition plate arranged in the middle of the case. The top of the piston rod is hinged to the rotating shafts on the two sides of the annular cutter through connecting rings. and a bottom tray is arranged under the annular cutter, the bottom tray is detachably placed on the partition plate through a limiting block, a plurality of supporting columns are evenly distributed in the center of the bottom tray, and arc-shaped grooves used for containing spherical fruits are formed in the centers of the interiors of the supporting columns. The automatic fruit cutting machine can be used for rotary cutting of fruits, the traditional manual cutting process is replaced, the cutting efficiency is greatly improved, and the labor intensity of operators is reduced.