“In the field of building materials, researchers analyzed the effects of different fiber scales, dosages, and composite ratios on the chloride ion penetration resistance and basic mechanical properties of cement-based materials through electrical flux tests, electron microscopy scanning observations, and basic mechanical performance tests. The results show that the resistance to chloride ion penetration of multi fiber composite reinforced cement-based materials is significantly better than that of single fiber reinforced cement-based materials, and the compressive strength is roughly inversely proportional to the depth of chloride ion erosion and electrical flux. In addition, researchers have established a calculation model for the depth of chloride ion erosion, providing a solution for evaluating the resistance to chloride ion penetration and erosion performance of multi fiber composite reinforced cement-based materials.”