Reactive cement-based hardener, usually also known as concrete seal curing agent, concrete penetration crystallization agent, cement-based reinforcing agent and cement ground from the sand treatment agent. It penetrates into the interior of the concrete through the pores of the cement-based surface layer, and chemically reacts with ettringite to generate hard crystals similar to cement stone. At the same time, it stimulates the cement particles that are not completely hydrated in the cement to further hydrate, so that the concrete is solidified into a solid entity, and the internal pores of the concrete are plugged to improve the strength and compactness of the concrete, thereby improving various physical properties of the concrete, to achieve impermeability, wear resistance, hard, non-slip, acid and alkali corrosion resistance, bright dust-free and easy to clean, similar to the overall effect of marble, its service life and concrete in the same cycle