As the problem of light pollution is becoming more and more serious, it is urgent to establish a general comprehensive index for light pollution risk evaluation. In this paper, to measure and mitigate the impact of light pollution in each region, we collected relevant data, and established A comprehensive light pollution risk evaluation model to study the risk level of light pollution in each area. light pollution is mainly divided into nighttime light over-brightness pollution, spectral light pollution and glare pollution that can be subjectively perceived by individuals. Correspondingly, four indicators were selected, which are the OBI, AER, AP and PLPI. Using the entropy weighting method, the four indicators are assigned weights and summed to form the LPI. Define the value of LPI in 0–0.1 as almost no pollution; in 0.1–1 as light pollution; 1–3 as moderate pollution; 3 and above as heavy pollution.