The present invention provides a light shading adhesive, wherein raw materials of the light shading adhesive comprise, by weight, 125-150 parts of a resin, 2.0-22 parts of a curing agent, 0.05-0.08 parts of a curing accelerator, 24-42 parts of a solvent, 0.8-25 parts of a light shading agent, and 15-75 parts of an auxiliary filling, and the light shading agent comprises one or a plurality of materials selected from nano-silica, nano-zinc oxide, nano-titanium dioxide, clay powder and aniline black. The present invention further provides a preparation method of the light shading adhesive, an application of the light shading adhesive, and a laminated plate adopting the adhesive as the raw material. The adhesive has excellent light shading function, can be used for various laminated plates with the high light shielding requirement, copper-clad plates and the like, and is especially suitable for preparations of TFT-LCD, TP / LCM, LED devices, and the like. During the use of the high bright strength equipment, the light shading adhesive of the present invention can provide a good reflection effect for the light source, and shade light source transmission from the backside of the substrate, such that the bright strength of the equipment and the backlight utilization efficiency can be improved, the energy sources can be saved, and the low-carbon environment protection can be realized.