The invention discloses a continuous roller vacuum dryer. The continuous roller vacuum dryer comprises a drying bin, an elbow, a bracket, a heating device, an unloading valve, a vacuum unit, a drivingdevice, a gear ring, an air guide pipe, support wheel brackets, a hopper and a sealing device. The drying bin comprises a heat pipe, a three-cylinder bin, a heating bin, a metal strip and a heat conducting medium; and the wheel brackets support a feed port and a discharge port at two ends of the drying bin. The heat conducting medium in the heating bin is continuously heated through the heating device; one end of the air guide pipe penetrates through the elbow at the feed port end of the drying bin and extends into the drying bin; and the other end of the air guide pipe is connected with thevacuum unit. Through the heat pipe, the heat conducting and dissipating area is increased; the heat of the heat pipe is conducted and dissipated through an outer cylinder of the three-cylinder bin byhigh-temperature heat conducting medium, so that the heat conducting and dissipating speed of the heat pipe in heat energy transfer is accelerated, the material drying efficiency is improved, and thepurpose of quickly drying materials is achieved; and through the drying bin, wet materials are difficultly agglomerated in the rotary drying process, and the materials have no drying dead angle.