In order to reduce the impact of ozone (O₃) on the ambient air quality and promote the continuous improvement of the ambient air quality in Shijiazhuang City, the method of characteristic ratio and positive matrix factorization (PMF) were used to analyze the sources of volatile organic compounds (VOCs) in the atmosphere in Shijiazhuang City during the period of O₃ pollution prevention and control campaign(hereinafter referred to as the O₃ campaign period) from May to September 2024. The results show that: 1) The frequent occurrence of high value of O₃ in Shijiazhuang city during the O₃ control period was affected by the unfavorable meteorological factors and high concentration of O₃ precursors; 2) The mass concentration of VOCs was 80.3 μg/m³ during the O₃ control period, and the mass concentration of VOCs on O₃ exceeded days was 87 μg/m³ higher than that on O₃ non-exceeded days; Oxygenated VOCs (OVOCs) components contribute the most in the three periods, with acetone contributing the highest among the top 15 VOCs species; 3) The ozone formation potential (OFP) and hydroxyl consumption rate (L·OH) during the O₃ control period were 188.7 μg/m³ and 8.3 s^-1, respectively, and the OFP and L·OH on O₃ exceeded days were 22.2 μg/m³ and 3.2 s^-1 higher than those on non-exceeded days, respectively; 4)The results of refined source apportionment show that during the O₃ control period, VOCs are most affected by petrochemicals and chemicals, as well as vehicle exhaust emissions; The contribution of VOCs from surface coating, cement/glass, plant emission, pharmaceutical manufacturing, electricity and pesticide use on O₃ exceeded days is higher than that on O₃ non-exceeded days, while the contribution of VOCs from vehicle, petrochemicals and chemicals, and non-road mobile machinery is lower than that on O₃ non-exceeded days. The research results provide a basis for further pollution control of petrochemical and chemical industries, as well as vehicle exhaust emissions in Shijiazhuang. and also provide data support for the adoption of targeted pollution source control plans and the reduction of the impact of O₃ on environmental air quality.