The invention provides a bran-steaming device and a use method thereof, belonging to the technical field of wine brewing. The technical problem solved by the invention is that the existing bran-steaming device has low bran-steaming efficiency and wastes energy. The technical scheme of the invention is to provide the bran-steaming device and the use method thereof. The bran-steaming device comprises a steaming bucket, wherein a pressure steaming device is overlapped on the steaming bucket. When the bran-steaming device is used, bran is filled in the steaming bucket and the pressure steaming device of the bran-steaming device and the pressure steaming device is overlapped on the steaming bucket; during bran steaming, the steam pressure is controlled to 0.02-0.04MPa and the bran-steaming time is 30-80min; unloading is performed after bran steaming, and the bran husk is spread; and double bran-steaming amount can be realized and the energy can be efficiently utilized.