Based on the continuous application of information technology(IT) in the field of audit and the policy driven background of ‘strengthening audit by science and technology’ and ‘full coverage of audit’, this paper discusses the relationship between IT and government audit quality. It is found that the improvement of social IT environment has brought negative impact on the quality of government audit, while the audit institutions choose to increase the investment in IT, carry out information construction and organize auditors to participate in IT training, which can significantly improve the impact of social information environment on audit quality and improve the quality of government audit. At present, IT has entered the era of big data, and the conclusions of the paper can provide enlightenment for the government audit institutions to continue to carry out information construction and strengthen information technology training. Auditors should improve IT audit analytical skills, improve audit efficiency, ensure audit quality, and make information technology better serve the government audit work.