To prevent tax risk. The profit rate of the industry, from the tax rate, selection of indicators cost rate, set up 139 industry tax risk model, every year in June of last year's tax returns for taxpayers to carry out a risk rating of each scanning and sorting. The taxpayer to automatically generate a medical risk identification table the report, suggesting that the risk to the taxpayer, the key points of guidelines to deal with risk. Through on-the-spot verification and constantly revised and improved, the model accuracy has been increased to about 80%. The classification of coping, gradually improve the taxpayers tax compliance degree