Abstract: With the continuous development of the construction industry, the level of project cost management is gradually improved, among which the reinforcement work quantity audit plays an important role in the completion settlement stage. In view of the quantity of reinforcement, not only the total amount of reinforcement materials should be calculated, but also the later quantity work should be done well. Based on this, this paper discusses the problems existing in the audit of reinforcement quantity in the completion settlement, and puts forward the application strategy of the reinforcement quantity audit in the completion settlement.