NOVELTY - Multilayer fluororesin film (1) comprises: a substrate (11) having a first surface (111) and a second surface; a first fluororesin layer (12) formed on at least one of the first and second surfaces, where the first fluororesin layer comprises a first fluororesin material and a first adhesive material, and the weight ratio of the first fluororesin material related to the first adhesive material is 0.05-0.9; and a second fluororesin layer (13) formed on the first fluororesin layer, where the second fluororesin layer comprises a second fluororesin material and a second adhesive material.    USE - The multilayer fluororesin film is useful as a self-adhesive film in a solar cell module.    ADVANTAGE - The multilayer fluororesin film: exhibits high adhesion strength and high functional properties (i.e. corrosion resistance), which is trade-off to each other; is manufactured in cost effective manner with improved yields; and exhibits high protective characteristics including moisture-proof characteristic and weatherability (i.e. weathering resistance).    DETAILED DESCRIPTION - Multilayer fluororesin film (1) comprises: a substrate (11) having a first surface (111) and a second surface, where the first and second surfaces are parallel to each other; a first fluororesin layer (12) formed on at least one of the first and second surfaces, where the first fluororesin layer comprises a first fluororesin material and a first adhesive material, and the weight ratio of the first fluororesin material related to the first adhesive material is 0.05-0.9; and a second fluororesin layer formed on the first fluororesin layer, where the second fluororesin layer comprises a second fluororesin material (13) and a second adhesive material, and the weight ratio of the second fluororesin material related to the second adhesive material is 1.2-19.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of the multilayer fluororesin film.    Multilayer fluororesin film (1)    Substrate (11)    First fluororesin layer (12)    Second fluororesin layer (13)    First surface (111)