Polypropylene short fibers can effectively improve the crack resistance, impermeability, impact-abrasion resistance, and frost resistance of mortar/concrete, as well as enhance the workability of concrete. Tens of millions of fibers are uniformly distributed in the mortar/concrete, providing an excellent micro-reinforcement effect, maintaining the integrity of the structure, preventing the structure from breaking into many fragments when subjected to impact damage, preventing corrosion of steel reinforcement in the structure, greatly extending the service life of the project, and reducing maintenance costs. It is applied in cement mortar, shotcrete, rigid self-waterproofing concrete structures, etc.