PURPOSE: To make it possible to select a desired door opening/closing pattern by a driver, by providing an opening switch, a closing switch, a full opening switch, a full closing switch, and selection switches for plural operations, as the switches for manual operation.

CONSTITUTION: As a manual operation switch set 122 of a door opening/closing mechanism, an opening switch 124a, a closing switch 1246, a full opening switch 123a, a full closing switch 123b, and plural opening amount selection switches 123c-123i are provided. And, the opening switch 124a and the closing switch 124b operate the door opening/closing mechanism opened and closed during the time they are switched on. And the full opening switch 123a and the full closing switch 123b operate the door opening/closing mechanism in the full opening and the full closing conditions when they are switched on. Furthermore, the opening amount selection switches 123c-123i operate the door opening/closing mechanism opened and closed at a certain opening amount by selecting a desired opening amount.