Deal with it separately with single detailed data as a unit, so as to ensure that suspicious business is handled separately and the suspicious business is refunded normally. Tax refund split-flow audit is a new tax refund method, which is handled separately with a single detailed data unit to ensure that suspicious business is handled separately, and the business will undoubtedly be refunded normally. Tax refund means that for some reason, the tax authorities will refund the tax paid to the original taxpayer according to the prescribed procedures. It mainly includes: various symptoms caused by work mistakes; Policy tax refund. Due to the change of tax policy; Tax refund for other reasons.