An interactive exercise apparatus for allowing a user to invite a friend to join an exercise class includes a mirror display device, a communication module and a control unit. The mirror display device has a mirror configured to reflect an image of the user and a display device configured to display video content which includes an instructor image demonstrating an exercise in the exercise class. The communication module is configured to interconnect with another interactive exercise apparatus of the friend via a network. The control unit is configured to control display content and is operable to control the mirror display device to display the instructor image and a real-time image of the friend to the user. Specifically, the instructor image, the image of the friend and the image of the user reflected by the mirror are shown simultaneously on the mirror display device during the exercise class.