Disclosed herein are an apparatus and a method for controlling an image on a multi-function mirror, the apparatus for controlling an image on a multi-function mirror including: an angle sensor that measures the angle of a multi-function mirror in a vehicle; an operation sensing unit that senses the operation angle of the multi-function mirror from the value measured by the angle sensor; a view changing unit that produces a view-changed image by changing the view of an external image taken by a first camera mounted on the vehicle on the basis of the sensed operation angle of the room mirror; and an output control unit that controls the external image to be displayed on the multi-function mirror, and controls a view-changed image corresponding to the adjusted angle of the multi-function mirror to be displayed on the multi-function mirror.