According to the Interim Measures for Settlement of Construction Project Price, the Employer shall pay the project completion settlement price to the contractor according to the confirmed completion settlement report, and keep about 5% of the quality deposit. However, in order to ensure the implementation of the lifelong responsibility system for the quality of the main structure of construction projects stipulated in the Building Law, the system of charging 5%~8% of the project budget is generally implemented in the domestic construction industry at present.