This paper is aimed at studying of high concentration ozone events in summer in Airport New City (ANC) of Xi-Xian New Area, Shaanxi Province. Online instruments were used to continuously monitor the hourly concentration of ozone and its precursor (nitrogen oxides (NO_x) and volatile organic compounds (VOCs)) in ANC from 27 July to 26 August 2018(31 days). The results show that the ozone concentration is generally high during the midsummer (July & August) at ANC, and the average concentration is 103.8 μg/m³ and the maximum concentration reaches 306 μg/m³. There are 16 days when the ozone concentration exceeds the limit during the study period and its diurnal variation of concentration shows a single peak trend, with the maximum value about 17:00 p.m. and the minimum value around 6:00 a.m. The correlation coefficient between ozone and NO_x is -0.648 7, and that between ozone and VOCs is -0.091 1. When VOCs/NO_x is below 6.43, VOCs play a leading role in the generation of ozone, and when VOCs/NO_x is above 6.43, NO_x plays a decisive role in the generation of ozone.