The invention discloses a microwave continuous freeze-drying device, and relates to the technical field of freeze-drying equipment. The device comprises a freeze-drying bin, a microwave shield plate, a vacuum water-trapping system and a microwave bin, wherein the freeze-drying bin comprises an upper bin opening, a left bin wall, a right bin wall and a bottom bin wall, wherein the left bin wall, the right bin wall and the bottom bin wall are all made from nonmetal wave transparent materials, such as polyfluortetraethylene, polyethylene, polypropylene or quartz glass. The device provided by theinvention solves the technical problem of freeze-drying failure caused by glow discharge of the microwave under the freeze-drying environment so that the microwave can really be used in the freeze-drying industrial environment; and simultaneously, the device disclosed by the invention prevents the microwave in vacuum environment from being reflected by the freeze-drying bin wall so that the microwave field in the freeze-drying bin is more uniform, the freeze-drying yield is high, and the quality is excellent.