The invention discloses customized sunscreen lotion based on private genes and a preparing method thereof, and relates to the technical field of skin care products. The technical aim that the repairing function of a skin care product after persons are injured by ultraviolet rays is improved is achieved. The raw material ratio of the customized sunscreen lotion is conducted according to private gene detection, and the customized sunscreen lotion is prepared from 1,3-butanediol, hydroxyacetophenone, hexanediol, sodium hyaluronate, glycerol, a polyacrylic ester cross-linked polymer-6, dipotassiumglycyrrhizinate, sodium hydroxide, cera alba, polysorbate-80, citric acid, sodium citrate, octocrilene, diisopropyl sebacatem, sodium ethylene diamine tetraacetic acid, arachyl alcohol (and) behenylalcohol (and) arachidyl glucoside, tremella polysaccharide, lauric acid isopentyl ester, phenylbenzimidazole sulfonic acid, ethylhexyl triazone, tocopherol, lignocaine hydroxybenzoyl ethyl benzoate, Tinosorb M, fibronectin and Chiba Jasmine water. The customized sunscreen lotion has the good sunscreen repair effect.