disclosed is an adhesive composition for optical use and , more particularly , an adhesive composition which includes ; 30 to 80 wt . % of a mono - functional urethane acrylate oligomer having a weight average molecular weight of 10 , 000 and 35 , 000 , 10 to 60 wt . % of an acrylate monomer ; and 0 . 1 to 10 wt . % of a free radical photo - initiator , so as to retain physical properties of the adhesive composition such as coating property and adhesiveness and , in addition , reduce incurring of setting shrinkage during photo - polymerization , thereby exhibiting a uniform thickness and excellent surface appearance , durability such as heat resistance and moist heat resistance , and storage elasticity . moreover , the inventive composition does not contain an alternative solvent , thus enabling manufacturing of a thick film type adhesive film .