Prevent corruption. According to the information of Query Knowledge Network, the purpose of strict investigation is to prevent corruption and supervise the authenticity and compliance of finance. Audit is an independent economic supervision activity. Full-time institutions and personnel authorized or entrusted by the state, in accordance with national laws and regulations, auditing standards and accounting theories, use special methods to verify the authenticity, correctness and compliance of the audited entity's finance, financial revenue and expenditure, business management activities and related materials.