X-ray photography (filming), fluoroscopy machine, gamma knife, CT machine, molybdenum palladium machine, dental machine, I 132, C-arm, electron accelerator, etc. X-rays will do harm to human health, so using radiation protection products is one of the important methods and effective means to protect human health. Attention should be paid to the design of radiation protection buildings in the decoration of radiology department. Now there are many professional radiation protection companies to consult. Generally speaking, there are the following aspects: 1. Room area, ordinary X-ray machine (including radiography, fluoroscopy, CR, DR, gastrointestinal) is not less than 24 square meters, and double-bed double-tube machine is not less than 36 square meters; The CT room should be at least 30 square meters. 2. The doors, windows, walls, roof (with rooms on the roof) and floor (with rooms under the floor) of the computer room should have certain protective effects. At present, the general protection scheme is that if the room area of the ordinary X-ray machine is enough, the wall adopts 24 brick walls (coated with 3cm barium sand and other composite protective materials) or 37 brick walls, and the ceiling or floor of the room can reach 15cm concrete. If the room area of CT machine room is enough and the walls are made of 37 brick walls (the walls are coated with 3cm composite protective materials such as barium sand), the roof or floor of the room can reach 20cm concrete. Doors, windows, etc. Can meet the requirements of more than 3mmPb.