The methods and mechanisms to improve the chloride corrosion resistance performance of concrete are presented. The influence of different admixtures on the chloride corrosion resistance performance of ordinary concrete, admixtureadded concrete and fiberreinforced concrete are studied by means of experiments. The admixtures for concrete used in chloriderich area are optimized in accordance with the experiment results. With the optimized admixtures, the quality of the concrete is improved and the quality of the project is guaranteed.