To provide an information writing apparatus for conveying a sheet by reducing any impact on a radio integrated circuit element stored by the sheet.

An information writing apparatus 10 includes: a belt device 32 that conveys a sheet 24 holding a radio integrated circuit element 30; and a transmitting/receiving member 66 that transmits and receives signals to/from the radio integrated circuit element 30 in the sheet 24 conveyed by the belt device 32, wherein the belt device 32 includes a first belt 36 made of nonmetal and a second belt 38 placed so as to be faced to the first belt, and made of nonmetal, and the sheet 24 is caught between the first belt 36 and the second belt 38 so as to be conveyed.