The invention relates to a fruit and vegetable vacuum precooling, sterilizing and fresh keeping synergy device and an application method thereof. The fruit and vegetable vacuum precooling, sterilizingand fresh keeping synergy device comprises a tank body and a procedure controller, wherein a door which can be opened and closed is arranged on one side of the tank body, so that fruits and vegetables are convenient to take and put; two types of ultraviolet sterilizing lamps which can be moved are arranged in the tank body; a base which can vibrate is arranged at the bottom of the tank body; thetank body is connected with a vacuumizing device through a pipeline, so that vacuum is generated in the tank body; and the procedure controller can edit and arrange a sterilizing manner, and control the motions of the sterilizing lamps, the base and the vacuumizing device. According to the fruit and vegetable vacuum precooling, sterilizing and fresh keeping synergy device disclosed by the invention, sterilization and disinfection can be performed at the same time in a vacuum precooling room, so that the synergistic reaction of ultraviolet, ozone and vacuum is sufficiently achieved, the problems that in the prior art, the operation time is too long, the sterilizing is not thorough, and the working place is polluted are effectively solved, the working efficiency is improved, and the damage on the fruits and the vegetables caused by transporting can also be reduced; and the fruit and vegetable vacuum precooling, sterilizing and fresh keeping synergy device has important effects on reducing damage of the fruits and the vegetables and improving product quality, and is suitable for storing, transporting, fresh keeping and producing of the fruits and the vegetables, and test of scientificresearch institutions.