To provide an electronic device capable of attaining improvement of workability (productivity) and improvement of antenna performance (communication performance) in manufacturing by targeting the electronic device constituted by mounting a non-contact type approximate communication module and constituted by installing loop-like antenna wire in an antenna unit of the non-contact type approximate communication module at a prescribed position inside a device casing.

The present invention is constituted so as to hold continuous parts extending in the longitudinal direction of the antenna wire by being equipped with a stopper block representing the shape taking after an installation mode of the antenna wire to the device casing and incorporating the stopper block in the device casing. In addition, the present invention aggregates operations concerning attachment of a magnetic substance sheet by attaching the magnetic substance sheet to the stopper block in a mode of located between metal components close to the antenna wire.