Economic evaluation is to evaluate projects from the perspective of resource allocation, which involves whether the use of resources is reasonable. Economic evaluation includes micro and macro levels.

The economic evaluation at the micro level, that is, the economic evaluation at the project level, is based on the theories of microeconomics such as balance, willingness to pay, consumer surplus, and opportunity cost to derive the shadow price system that reflects the "real economic value" of resources in the specific region where the project is located, Evaluate the optimal allocation of resources at the micro level in a specific area. Lanzhou Project Feasibility Study Report

The macro level economic evaluation should be from the perspective of the macro regional economic impact of the project, and major projects should be from the perspective of the entire national economy to evaluate the resource allocation of the project in the affected region and the entire national economy, such as the impact on the upgrading of regional industrial structure, the impact on the cultivation of regional leading industries, the impact on national economic security The impact on improving international competitiveness and developing national economy, and the impact on balanced economic development between regions. Preparation of feasibility study report