Acid corrosion of concrete used in hydraulic structures is common，which seriously affects the service life of hydraulic structures.In this paper，in order to improve the acid resistance of concrete as the goal，from the aspects of concrete raw materials，polypropylene fiber，fly ash，mineral powder and sodium silicate as the main admixtures，systematically studied the influence of multi admixtures on the acid corrosion resistance of cement-based materials.The results show that when the content of fly ash is 15%～30%，the acid resistance is better；when the mineral powder content is 15%～30%，the weak acid resistance is better，and the change of strong acid resistance is small；when the sodium silicate content is 1.5%～3.0% ，the acid resistance is better；when the fly ash：mineral powder：sodium silicate=15%:30%:1.5%，the effect is better．