Abstract: In the report, in order to understand the variation characteristics of air quality, vehicle flow and ultraviolet radiation in Haikou National Monitoring Station in different seasons and periods from 2016 to 2017, and provide scientific basis for air quality research and air pollution control in Haikou, Hainan Normal University, Haikou National Monitoring Point, was selected as the sampling point, the data of air quality indicators, vehicle flow and ultraviolet radiation for 100 days in different periods and seasons from 2016 to 2017 were measured. The correlation between air quality indicators and vehicle flow, ultraviolet radiation and O₃, NO₂ and O₃ were analyzed. From 2016 to 2017, there were significant differences between traffic flow and ultraviolet intensity in different time of Hainan Normal University (P＜ 0.05), but there were no significant differences in PM_2.5, PM₁₀, O₃, NO₂, SO₂, AQI(P＞ 0.05). The differences between ultraviolet intensity, PM_2.5, PM₁₀, O₃, SO₂ and AQI in different seasons were statistically significant (P＜ 0.05). The correlation between vehicle flow and PM₁₀(r=0.161, P＜ 0.05) was derived, NO₂ and O₃(r=0.142, P＜ 0.05) also existed. Vehicle flow and PM₁₀ was positively correlated only in spring. NO₂ and O₃ were negatively correlated in the afternoon and positively correlated in summer. These data suggested that from 2016 to 2017, the main air pollutants in Hainan Normal University were PM_2.5, PM₁₀ and O₃, the pollution season mainly happened in winter, vehicle flow was on the increase trend, and it was most closely related to PM₁₀ concentration in the air.