The present invention discloses an efficient and environmental-protection liquid crystal display screen cleaning agent, which comprises the following raw materials by weight: 36-44 parts of fatty alcohol polyoxyethylene ether, 18-25 parts of metasilicate, 16-20 parts of glycerol, 8-14 parts of amine alkali, 15-35 parts of a surfactant, 6-9 parts of a chelating agent, and 50-75 parts of deionized water. Compared to the liquid crystal display screen cleaning agent in the prior art, the liquid crystal display screen cleaning agent of the present invention has advantages of low cost, wide raw material source, strong cleaning capability, less consumption, effective metal ion pollution removing, environmental protection and no pollution, cannot damage the integrity of the liquid crystal display screen, and cannot not affect the photoelectric property, the electromagnetic property, the permeability, the device surface physical properties and other performances.