Tax inspection refers to the tax inspection and handling of taxpayers and withholding agents by tax authorities according to tax laws and regulations, including investigating and dealing with tax evasion, tax fraud, tax arrears and tax refusal according to law. Anti-tax avoidance refers to the tax adjustments made by tax authorities to taxpayers' specific tax matters according to tax laws and regulations and internationally recognized pricing principles and business practices, including tax adjustments to taxpayers' price manipulation, capital weakening, tax avoidance in tax havens and other tax avoidance situations. Anti-tax avoidance only adjusts taxpayers' tax avoidance behavior and increases interest, while tax inspection fines taxpayers for tax violations and even transfers them to judicial organs for handling. As far as individual cases are concerned, the tax inspection cycle is generally short, some only need a few days, and the long one is only a few months; The anti-tax avoidance investigation cycle is generally long, ranging from several months to several years.