PP short fiber is a kind of fiber, and PP short fibecan improve the crack resistance, impermeability, erosion resistance, frost resistance, explosion resistance and workability of mortar/concrete. Tens of millions of fibers are evenly distributed in the mortar/concrete, playing a very good micro-reinforcement role, so that the integrity of the structure is well maintained, and the structure is prevented from being scattered into many fragments when the structure is damaged by impact. The corrosion of steel bars in the structure can greatly extend the service life of the project and reduce the maintenance cost of the project.