This product is a cement-based ordinary penetrating liquid hardener for construction use. It fills the internal pores of the substrate and optimizes the microstructure, thereby significantly improving the strength, hardness, wear resistance and impermeability of the substrate. The product is suitable for curing and strengthening treatment of concrete, cement mortar floors, walls and other cement-based substrates in various industrial and civil buildings, especially suitable for ordinary occasions with basic requirements for surface strength and durability.