Abstract: The present invention has an object to provide a binder insert enabling a photograph to be mounted without using adhesive and the like and to write memos as needs arise. The binder insert is comprised of a plastic body and having a bag shape with the upper side thereof opened, a photograph store portion and a memo store portion are provided by dividing the body at a melt portion, a store board, which is made by folding a thick paper in two, having slits at predetermined positions thereof to insert corners of a photograph and a color paper therebetween, and a memo paper to be inserted into a memo store portion. At one side of the body, a binding section having a plurality of binding holes is provided. Slits provided within the store board are a set consisting of four pieces and plural sets are positioned in accordance with standardized photograph sizes for insertion of corners of a photograph. A form of each slit is curved, and round holes are provided at both ends of said curved slits.