NOVELTY - The protection sheet (31) has an olefin type polymer layer (18) that is positioned as outermost layer at the single surface side of base film (16). The melt flow rates of olefin type polymer layer are 75 g/10min or more and 300 g/10min or less including olefin resin. The adhesion power at the time of peeling in the 180 degree direction of polymer layer and ethylene vinyl acetate (EVA) sealing material in 25 degree C is 6 N/mm or more. The adhesion power at the time of peeling in 180 degree direction of polymer layer and EVA sealing material in 150 degree C is 0.25 N/mm or less.    USE - Protection sheet for solar cell, used for manufacturing solar cell module.    ADVANTAGE - The adhesion power with sealing material is high at normal temperature. The solar cell module can peel the protection sheet for solar cells easily at high temperature. Thus the reworking process of being easy to peel from sealing material is increased.    DETAILED DESCRIPTION - The olefin resin is an ole fine resin by which acid modification is carried out. The thickness of the olefin type polymer layer is 0.1 micrometer - 100 micrometers. The thickness of the olefin type polymer layer is 0.1 micrometer - 10 micrometers. The olefin type polymer layer is a layer which applies the coating liquid. A water-system coating liquid is coated on olefin type polymer layer. The base film is a film containing resin chosen from polyester, polyolefin, polyamide, and group that consists of fluorine containing resin. An intermediate layer is formed between the base film and the olefin type polymer layer. The intermediate layer includes color pigment. INDEPENDENT CLAIMS are included for the following:    (1) a solar cell backsheet which has first weather-resistance layer containing silicone- acryl composite resin and second weather-resistance layer containing fluororesin are laminated in order on the surface on the opposite side to side where the olefin type polymer layer of the protection sheet for solar cells is positioned. A transparency front substrate is provided to inject sunlight. A sealing material is provided to seal the solar cell element and positioned on the opposite side to the front substrate of the sealing material. The solar cell module has solar cell backsheet adhered to the olefin type polymer layer on the sealing material directly; and    (2) a reworking method of solar cell module which involves heating the solar cell module and peeling the solar cell backsheet from the sealing material. The solar cell backsheet is peeled from the sealing material. The solar cell module is heated from two directions at the side of the front substrate and the solar cell backsheet.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the protection sheet for solar cells.    Base film (16)    Intermediate layer (17)    Olefin type polymer layer (18)    Protection sheet (31)