Polyurethane mortar is a four-component high-performance flooring system composed of waterborne polyurethane resin as the binder, replacing traditional cement, high-strength inorganic materials, graded silica quartz sand and colors. It combines the flexibility of organic polymer materials and the mechanical strength of inorganic materials to form a composite structure with both waterproof, corrosion resistance, impact resistance and temperature difference resistance, which is suitable for application in wet, moisture, corrosive, oily, very high and low temperature working environments.