Abstract: Based on 51 scientific experiments of ozone (O₃) sounding observations and meteorological sounding data at Shaowu Station in Wuyishan region in 2022, the seasonal distribution of O₃ in the middle and lower troposphere (0-6 km) and the change trend of ozone volume mixing ratio (OVMR) in this region were analyzed, and difference of the atmospheric circulation situation, diagnostic physical quantities and vertical profiles of 10 cases with column ozone amount (COA) ranking top 5 and last 5 were explored. The results showed that: The seasonal distribution of OVMR below 1.5 km was spring>autumn> summer>winter, while OVMR above 1.5 km showed the highest in spring and the lowest in summer. Except for autumn, the seasonal distribution of OVMR above 1.5 km showed an increasing trend with height in all seasons. Three of the top 5 cases with COA in the 0-6 km occurred from April to May, and the dominant weather situation and wind field were controlled by the northward flow before the cold high pressure or the easterly flow at the bottom of the high pressure. And the other two cases occurred in September, influenced by the combined influence of the subtropical high pressure and the sinking airflow around the periphery of the typhoon. And all 5 cases showed stable atmospheric structure in the middle and lower layers troposphere, dry air, thin wet layer, obvious sinking airflow, strong convective suppression ability, and easterly winds in the lower layers, with wind speeds ranging from 4-8 m/s. There were significant differences in the occurrence months, weather conditions, and diagnostic physical quantities between the last 5 cases and the top 5 cases.