FD food frozen vacuum drying device, the first material rapid freezing to 18 ° C ~ - 30 ° C, make its internal moisture and form a uniform fixed in the original position of tiny ice crystals, however, under the condition of selected vacuum heating, make ice sublimation, directly to remove material internal moisture, to obtain the high quality of dry method. This equipment is mainly composed of dry - trap water system, vacuum system, cooling system, media system, material transmission system, microcomputer control system, etc.