NOVELTY - A protection sheet (1) comprises base material (11), tie layer (12), and a sealing material contact bonding layer (13). The base material is formed from film of polyester-type material, and in which terminal carboxyl group concentration of polyester in polyester-type material is 40 equivalent/ton or less. The tie layer is formed from adhesive composition containing hydroxyl group terminal urethane prepolymer and isocyanate component. The adhesive composition contains terpene phenol component chosen from terpene phenol resin and group containing hydrogenated compounds.    USE - Protection sheet is used for solar cell module (claimed).    ADVANTAGE - The economical protection sheet has excellent durability, and improved productive efficiency.    DETAILED DESCRIPTION - A protection sheet comprises base material, tie layer laminated on one side of the base material, and a sealing material contact bonding layer laminated on the surface on the opposite side to the side which opposes the base material of the tie layer. The terminal carboxyl group concentration of polyester in which the base material is formed from the film of polyester-type material, and contained in the polyester-type material is 40 equivalent/ton or less. The tie layer is formed from the adhesive composition containing a hydroxyl group terminal urethane prepolymer and an isocyanate component. The hydroxyl group terminal urethane prepolymer has (meth)acryloyl group having ether bond in a principal chain. The adhesive composition contains terpene phenol component chosen from terpene phenol resin and group which consists of hydrogenated compounds. An INDEPENDENT CLAIM is included for solar cell module, which comprises sealing material including photovoltaic cell and the photovoltaic cell, and two protection components laminated on each of the main surface of the sealing material, and one or more protection components including protection sheet.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of protection sheet.    Protection sheet (1)    Base material (11)    Tie layer (12)    Sealing material contact bonding layer (13)