PURPOSE: To simplify mounting operations to easily mount many electrical parts by providing connectors connected to a thin circuit provided on a door pocket, and providing mating connectors on each place of a door trim into which the pocket is loaded and a door frame.

CONSTITUTION: With a mounting structure of a circuit body for automobile door, a flat wire harness 4 is bonded on the rear side joining surface of a door pocket 2 to be loaded on a door frame 1. At the same time, plural connectors 7-9 connected to an electrical part side wiring 5 + switch unit 6 are provided on one side of the harness 4, and a connector 10 connected to the vehicle side is provided on the other place of the harness 4. Further, a through hole through which the connectors 8, 9 are inserted is provided in a trim 1 on which the pocket is loaded, and a mounting hole 13 in which an unit 6 is inserted and mounted from the rear side of the trim 1 is provided. In this unit, a connector 15 on the pocket 2 side is provided on the lower part of a crank-shaped bracket 14 6, and when the unit 6 is mounted to the trim 1, the connector 15 is adapted to be fitted into the hole 12.