The invention relates to the field of coating preparation, and discloses an organic-silicon modified acrylic acid resin superhydrophilic antifogging coating and a preparation method thereof. The primary reaction raw materials comprises, by weight, 6.3-10.7% of methymethacrylate, 4.5-7.9% of butyl acrylate, 8.8-15.3% of gamma-methacryloxypropyl trimethoxysilane, 8.1-13.9% functional monomer hydroxyethyl methylacrylate, 16.0-27.0% of the reaction produict of diethanol amine and glycidyl methacrylate 3-(bis(2-hydroxyethyl)amino)-2-hydroxypropyl methacrylate and 7.4-12.8% of 2-acrylamide-2-methylpropionic sulfonic acid, the using amount of the azobisisobutyronitrile is 0.2%-0.4%, and the reaction solvent is N, N-dimethylformamide which takes up the 25.3%-45.6% of the total amount. The coatinghas the advantages of lower preparation temperature, good stability, simple production process, the purpose of energy saving is achieved, invested equipment is less, the coating is transparent leveledand has high adhesion force, -40 DEG C low temperature fog resisting and 80 DEG C high-temperature fog resisting can be achieved, the coating does not wrinkle, there exists no crack, and the coatingcan be repeatedly used for over 100 times.