Abstract: In this paper, the shielding material for shielding neutrons and gamma rays with certain energy are studied by using MCNP software. The shielding material is used to make protective vest for neutron and gamma radiation. The armor is thick and heavy, and it is difficult for human body to bear its weight. By studying the power-assisted exoskeleton device, the power-assisted exoskeleton device and the protective vest were combined to form protective clothing,and the power-assisted exoskeleton device was used to bear the weight of the protective vest, thus solving the problem that the human body needed to bear the weight. The performance of the protective clothing was tested with a radioactive source and in the field, and the technical parameters of the protective clothing for external irradiation, such as the shielding rate, thickness, uniformity and technical parameters have reached the expected requirements.

Key words: neutron, γ-ray, shielding material, shielding rate, power assisted exoskeleton device, protective clothing for external exposure