Magnetooptical recording medium with laminated anti-reflection film

A magnetooptical recording medium is provided which comprises (a) a light-transmissive substrate formed of a material selected from the group consisting of plastic and glass, (b) a multilayer film disposed on said light-transmissive substrate, and multilayer film being formed by alternate lamination in three or more odd number of a high-refractive film composed of a high-refractive material and a low-refractive film containing SiO2 as the main constituent and the film in contact with said light-transmissive substrate being a high refractive film, and (c) a recording magnetic layer disposed on said multilayer film, recording on said magnetic film being performed by a light beam transmitting said substrate and said multilayer.