The propulsion of performance management in the national audit office is conducive not only to speeding up the transformation of government functions, but also to achieving effective allocation of audit resources. The national audit office has the characteristics of project oriented government, reflecting the complexity of structure and the uniqueness of task. Based on the characteristics of project-oriented government of national audit office and from the perspective of project-oriented government, a new performance management model of national audit office is constructed, which can give full play of the advantages of project-oriented government in the horizontal and vertical coordination and provide better institutional guarantee to the implementation of national governance.