To implement opening/closing control of door opening/closing means by effectively receiving an opening/closing manipulation signal of an outside switch when a detected velocity of a stopped vehicle is not null because of a fault of vehicle velocity detection means or any other adverse effect.

When a slide door ECU 11 detects that a situation of brake depression and a shift lever position signify a stopped state of a vehicle itself, if a vehicle velocity detected by a vehicle velocity sensor 1 is equal to or higher than a predetermined velocity (for example, 3 km/h), reception of an opening manipulation signal based on a door opening manipulation performed on an outer handle switch 6a, which is an extra-compartment switch, or a remote-control opening/closing switch 6d recognized as lying outside the vehicle through area recognition is permitted, and opening control of door opening/closing means 7 is implemented.