Abstract: Based on the technical guide for the compilation of the road vehicle air pollutant emission list, the vehicle emission list of Honghe Prefecture in 2019 was established. The results showed that the total emissions of CO, HC, NOx, PM_2.5, PM₁₀ and SO₂ in Honghe were 29494 tons, 11908 tons, 13259 tons, 273 tons, 301 tons and 138 tons, respectively. There was a significant difference in vehicle pollutant sharing rate. Small gasoline passenger cars, light gasoline trucks, and motorcycles were the main sources of CO emissions. Small gasoline passenger cars and motorcycles contributed the most to HC emissions, while large diesel trucks contributed the most to NOx, PM_2.5 and PM₁₀. Gasoline vehicle was the main contribution source of CO and HC vehicle emissions, accounting for 82.01% and 96.64% of the total emissions, respectively. Diesel vehicle was the main contribution source of NOx, PM_2.5 and PM₁₀.