It is right that the main object of ex-ante performance evaluation is basic expenditure. Ex-ante performance evaluation refers to the use of scientific and reasonable evaluation methods by departments and units in combination with budget preparation and review, project approval, etc., for major new policies and projects to be introduced, to determine the necessity of project establishment, economical investment, reasonableness of performance targets, and feasibility of implementation plans. Conduct objective and fair assessments on corporate governance and financing compliance. Ex-ante performance evaluation is a prerequisite for policies and projects to be included in the project library. It is the basis of the entire performance management process and a necessary condition for budget application. It plays an important role in transforming ex-post performance into ex-ante performance.