Multifunctional food engraving device

The invention relates to a multifunctional food engraving device, comprising a handheld unit, an air source box, and an air pipe connected with the handheld unit and the air source box. The handheld unit comprises a hollow handheld portion, and comprises an upper portion, a middle portion and a lower portion which are connected in sequence; the upper portion and the lower portion are in a quadrangular shape; the middle portion comprises a semi-arc side and a plane side; the semi-arc side and the plane side are adjacently arranged; the lower portion is movably connected with a mold; the upper portion is provided with a bypass port close to the air pipe; a vacuum nozzle is arranged in the upper portion; a first slip sheet switch is arranged on the bypass port and controls opening and closing of the bypass port; a pulse adjusting portion comprises a rotating disc and a plurality of rotating doors; the rotating disc is parallel to the plane side; the rotating doors are located in the semi-arc side; a rotating but