A portable terminal device includes a first housing in which at least a display section is placed; a second housing in which at least an operation section is placed; a first circuit board on which a first connector is mounted; a second circuit board on which a second connector is mounted; and a connecting cable. A part of the first housing and a part of the second housing are placed one on top of another in a thickness direction. A first holding section and a second holding section are provided inside at least one of the first housing and the second housing, and when the first housing slides with respect to the second housing, a portion of the connecting cable between the first holding section and the second holding section is bent and extended.