Abstract: To reflect the environmental air quality status of each county(city) in Wenshan Prefecture since the implementation of automatic environmental air monitoring, monitoring data from 2019 to 2023 for five consecutive years were selected for analysis and evaluation. The results showed that the environmental air quality in the whole state was relatively good, and the trend of the proportion of excellent days remains stable. However, the comprehensive index showed a steady upward trend, and the overall air quality in the whole state showed a downward trend. There were obvious seasonal variations in the ambient air quality throughout the state, with the air quality being relatively poor in spring and relatively best in summer.