Protective device for reducing whole-body radiation dose

The invention discloses a protective device for reducing the whole-body radiation dose. The protective device comprises a base plate and a protective cover, lower protective walls are arranged at the edges of the left side and the right side of the base plate, and upper protective walls are arranged at the edges of the left side and the right side of the protective cover; the base plate is connected with the protective cover in a matched mode through the upper protective walls and the lower protective walls, and a protective space is formed between the base plate and the protective cover; and the base plate and the protective cover each comprise a lead substrate, a protective film arranged on the lead substrate and located on the surface of the inner side of the protective space and a tissue equivalent material layer arranged on the lead substrate and located on the surface of the outer side of the protective space. According to the protective device, protection on low-energy X rays can be completed through the lead substrates, and meanwhile the protection films are arranged on the inner sides of the lead substrates so as to be used for preventing the human body or other equipment from being in direct contact with the high-purity lead substrates; and as for protection on thermal neutrons, the tissue equivalent material layers are arranged on the outer sides of the lead substrates. As mentioned above, the protective space for protecting the human body can be formed through the base plate and the protective cover, and the ideal protective effect can be achieved.