A composite electronic device includes: a coil conductor arranged on at least one of a plurality of insulating layers; a drawing conductor arranged on another insulating layer and partially facing the coil conductor and having one end electrically connected to one end of the coil conductor so as to constitute an inductor in combination with the coil conductor for passing an external signal; an internal conductor having one end formed in the vicinity of a part of the coil conductor on one surface of the insulating layer where the coil conductor is arranged so that static electricity generated in the inductor is discharged to the one end and the discharged static electricity is released from the other end to the ground; and a via electrode for electrically connecting the one end of the coil conductor to the one end of the pull-out conductor. A part of the coil conductor and the internal conductor constitutes a static electricity regulator.