Provided are a binder useful for making sheets processed to effectively prevent misfeeds, a sheet manufacturing apparatus capable of desirably manufacturing sheets processed to effectively prevent misfeeds, a sheet manufacturing method, and a sheet processed to effectively prevent misfeeds. The binder for binding fiber to make sheets includes resin; and polyhydric alcohol that is a solid at room temperature and changes to liquid phase when heated. The content of polyhydric alcohol to 100 parts by weight resin is greater than or equal to 0.1 parts by weight and less than or equal to 20 parts by weight polyhydric alcohol.