The ultraviolet light tube used in the traditional ultraviolet light germicidal equipment is a special gas discharge lamp, which has problems of low light efficiency, large power consumption, poor seismic resistance, short life and filling hazards to the environment. In order to solve these problems, this paper adopts UVBLED as the light source of the ultraviolet light germicidal equipment, and performs light distribution design on the array composed of UVBLED, aiming at obtaining the required sterilization surface of the ultraviolet germicidal equipment, and solving the problems of low utilization rate of light energy, low irradiation intensity and heat dissipation.