A multifunctional fitness device comprising a fitness device body, a support arm and an intelligent control system, with a display device being disposed on a front surface of the fitness device body, the display device being a mirror display screen having functions of video teaching and ordinary mirror, a camera device being disposed at the top of the display device, and the camera device including a micro-camera and an infrared camera, support arms being disposed at both sides of the fitness device body through sliding rails respectively, a gear groove being disposed on the support arm, a gear fixing device for use in cooperation with the gear groove being disposed on the sliding rail, a rope being disposed inside the support arm, the other end of the rope being connected with an intelligent motor, which motor produces resistance to provide a resistant force to the support arm.