Bathroom waterproof polyurethane grouting plugging waterproof material, polyurethane grouting plugging good sealing performance, good extensibility, flexibility and impermeability, low temperature resistance, water permanently prototype. Mixed with water viscosity is small, groutability good 'consolidation body immersed in water is harmless, non-toxic, non-polluting. At the same time getting to the water to form a slurry consolidation body elastic material, the release of carbon dioxide gas, with the gas pressure, the slurry can be further pressed into the structure of the gap, the porous structure or formation can be completely filled with dense. Having a secondary permeation characteristics. Slurry good expansion, large water bag, and having a good hydrophilicity can be irrigated, while viscosity of the slurry, the curing speed can be adjusted as needed.