Preparation method of nano zinc oxide capable of blocking ultraviolet light and blue light

The invention relates to a preparation method of nano zinc oxide capable of blocking ultraviolet light and blue light. The preparation method comprises the following steps: (1) adding gallium oxide into a sodium hydroxide solution, and heating the solution to carry out reactions under stirring to obtain a transparent precursor solution; (2) slowly adding the precursor solution into a zinc acetate solution under stirring to prepare a turbid mixed solution; (3) slowly adding a sodium hydroxide solution into the mixed solution under stirring to generate a latex solution, heating and stirring, and then adding the latex solution into a reactor to carry out hydrothermal reactions; and (4) washing, drying, and grinding precipitates generated in the hydrothermal reactions, and finally burning the precipitates at a high temperature to obtain nano zinc oxide capable of blocking ultraviolet light and blue light. Compared with the prior art, the synthesis cost is low, no pollution is generated, the method is suitable for