The utility model discloses a vacuum sugaring device for shaddock peel. The device comprises a sugaring tank, a driving device, a stirring shaft, a sugar water tank, a heating sleeve and a vacuum pump, a sealing cover is arranged at the top of the sugaring groove so as to seal an inner cavity of the sugaring groove; the stirring shaft is transversely arranged at the bottom of the inner cavity of the sugaring tank; one end of the stirring shaft penetrates out of the sugaring tank and is connected with the driving device; the driving device drives the stirring shaft to rotate; the sugar water tank is connected with a liquid outlet pipe; a liquid outlet valve is arranged on the liquid outlet pipe; wherein the liquid outlet pipe extends to the top of an inner cavity of the sugaring groove in the horizontal direction, a plurality of atomization nozzles are arranged on the pipe section, located on the sugaring groove, of the liquid outlet pipe, the heating sleeve is located on the outer wallof the bottom of the sugaring groove, a vacuum pipe is connected to the side wall of the sugaring groove, and the vacuum pipe is connected with the vacuum pump. The technical scheme is used for solving the problems that an existing shaddock peel dipping mode is long in processing period and prone to bacterial contamination.