A control apparatus for a vehicle opening/closing member that operates the opening/closing member provided in the vehicle in response to a physical expression of a user, comprising: a user authentication unit that authenticates a user whose physical expression is to be detected; a physical expression detecting unit (13, 15a) that detects the physical expression of the user; and an operation determining unit that determines an operating state of the user authentication unit and the physical expression detecting unit (13, 15a); the control apparatus being characterized in that it further comprises: a notification unit (15c, 17) that notifies the user of a determination result of the operating state determined by the operation determining unit, the notification unit (15c, 17) performing a first notification to notify the user, after the completion of the authentication of the user, and a second notification to notify the user, after the detection of the physical expression, wherein the user authentication unit has a portable device authentication unit that authenticates a portable device carried by the user and a portable device position detection unit that detects the position of the portable device, and wherein the operation determining unit is configured to determine the completion of the operation of the user authentication unit when the position of the portable device detected by the portable device position detecting unit is located within a predetermined area and the authentication of the portable device by the portable device authentication unit is completed. a user authentication unit that authenticates a user whose physical expression is to be detected; a physical expression detecting unit (13, 15a) that detects the physical expression of the user; and an operation determining unit that determines an operating state of the user authentication unit and the physical expression detecting unit (13, 15a); the control apparatus being characterized in that it further comprises: a notification unit (15c, 17) that notifies the user of a determination result of the operating state determined by the operation determining unit, the notification unit (15c, 17) performing a first notification to notify the user, after the completion of the authentication of the user, and a second notification to notify the user, after the detection of the physical expression, wherein the user authentication unit has a portable device authentication unit that authenticates a portable device carried by the user and a portable device position detection unit that detects the position of the portable device, and wherein the operation determining unit is configured to determine the completion of the operation of the user authentication unit when the position of the portable device detected by the portable device position detecting unit is located within a predetermined area and the authentication of the portable device by the portable device authentication unit is completed. a notification unit (15c, 17) that notifies the user of a determination result of the operating state determined by the operation determining unit, the notification unit (15c, 17) performing a first notification to notify the user, after the completion of the authentication of the user, and a second notification to notify the user, after the detection of the physical expression, wherein the user authentication unit has a portable device authentication unit that authenticates a portable device carried by the user and a portable device position detection unit that detects the position of the portable device, and wherein the operation determining unit is configured to determine the completion of the operation of the user authentication unit when the position of the portable device detected by the portable device position detecting unit is located within a predetermined area and the authentication of the portable device by the portable device authentication unit is completed.