To provide an algaproof film excellent in algaproofness without causing crop damage in a greenhouse.

The algaproof film as an outdoor-setting film is a laminated film in at least two layers, wherein the outermost layer is a fullerene layer. More preferably, the algaproof film is a laminated film in at least three layers, wherein the 1st layer as the outermost layer is a fullerene layer, the 2nd layer as the intermediate layer is an algaproofing agent-containing macromolecular thin film layer, and the 3rd layer consists of a base film.