The invention relates to an economy management system which comprises a man-machine operation module, an identity identification module, a data processing module, an integrated accounting module, an enterprise control index establishing module, a comparison analysis module, a risk evaluation module, a function evaluation module, an artificial expert decision module, a simulated analysis module and a central processor. The system can avoid different vulnerabilities in the economy management process, and can provide different treatment decisions according to different conditions, each input data includes identity information of one who inputs the data, the data can be traced back, the data is evaluated in different aspects, requirements for enterprises manager management by relates staff are ensured, voucher data is input automatically in the form an electronic voucher, the system is capable of data arrangement and filing as well as accounting, the workload of workers is reduced greatly, each financial decision can be enforced in a simulated manner via a mathematical model, and reference basis is provided for making a final financial decision.