Abstract: UV photometric ozone measurements rely on the Beer-Lambert law of ozone absorption cross section at 253.65 nm. Bureau International des Poids et Mesures (BIPM) re-measured and revised the ozone absorption cross section at 253.65 nm from 1.147×10^-17 cm²/mol to 1.1329×10^-17 cm²/mol. This change will cause a systematic increase in ozone monitoring concentration by 1.24%. In order to assess the change on the air quality compliance in China, we used the national ambient air ozone monitoring data of 337 major cities in 2018 to simulate the impact of the new absorption cross section at 253.65 nm to the ozone concentration, and calculated the number of non-compliant cities, number of days with ozone pollution and the annual rate of days with good air quality in China. The results indicated that: (1) The change in the ozone absorption cross sectional coefficient will lead to an increase of 7 cities in the country that exceed the ozone standard. (2) The number of days of ozone pollution in the country, the cities in the '2+26' area, the Yangtze River Delta area, the Pearl River Delta and the Fenhe-Weihe Plain will be increased by 1.4, 3.5, 2.4, 1.7 and 2.1 days per city, respectively. (3) The proportion of the days with good air quality in these cities will be reduced by 0.3%, 0.9%, 0.6%, 0.4% and 0.6% annually. Considering the impact of the new absorption cross section on the air quality compliance in China, scientists and the government should pay more attention to the changes in the ozone absorption cross section.