The invention discloses LED-UV (Light-Emitting Diode-Ultraviolet) light curing hardening liquid, which is prepared from the following raw materials of acrylated acrylic resin, reactive monomer, radiation curing agent, additive and inorganic filler, wherein the acrylated acrylic resin is acrylated acrylic series resin with reactive double bond; the reactive monomer is a mixture of acrylate series reactive monomers; the radiation curing agent is one or a mixture of two of organic phosphorus and thione radiation curing agent; the additive is a defoaming agent and a flatting agent; the inorganic filler is filler with the grade of 5 to 1500nm. The LED-UV light curing hardening liquid is high in production speed, energy-saving and environment-friendly, safe and sanitary, and the electric energy can be saved by 20 to 80 percent.