National economic evaluation: economic internal rate of return, economic net present value (ENPV), economic net present value rate (ENPVR), economic exchange cost and economic exchange saving cost.

Economic evaluation of engineering projects: output efficiency index, operation efficiency index, profitability index, solvency index, development ability index and social contribution index.

General indicators: timeliness indicators, value indicators and ratio indicators.

Economic evaluation refers to evaluating whether the plans, budgets, decisions and schemes of the audited entity are advanced and feasible, whether the economic activities are carried out in accordance with the established objectives, whether the economic benefits are good or bad, and whether the internal control system is sound and effective. , after the audit of the audited entity's finance, financial revenue and expenditure and related economic activities, put forward opinions and suggestions in a targeted manner, with the aim of urging it to improve its management and economic benefits.

The funds for economic evaluation are limited. In order to save and use investment effectively, we must emphasize economic benefits. Before making an investment decision, we should carefully conduct a feasibility study and calculate and analyze the economic benefits of the investment project. When there are multiple alternatives, the economic benefits of each alternative should be compared and optimized. This process of analysis and demonstration is called project economic evaluation.