Protective sheet and manufacturing method thereof for a solar cell and a solar cell module

The present invention aims to provide a solar cell module back protective sheet which is excellent in adhesive strength of the sealing material for fixing the junction box used in the manufacture of solar cell modules. Solar cell module back protective sheet of the present invention (10) is on one side of a substrate sheet (11) (11a), a fluororesin layer (12), a fluororesin layer (12) have a volume-average a secondary particle size of silica particles of 0.5 to 10 [mu] m, containing a coloring pigment volume concentration of silica particles to the volume of the fluororesin layer (12) is characterized in that it is a 14-25 volume%