The invention discloses a novel multifunctional self-regulation fitness seesaw comprising a top plate, a fixed block is arranged at the bottom of the center of the top plate, cushions are fixedly connected to the two ends of the top plate, backrests are vertically and fixedly connected to the tops of the cushions, supporting plates are arranged at the tops of both ends, close to the cushions, of the top plate, fixing grooves are formed in the bottoms of the supporting plates, and handles are fixedly connected to the two sides of the supporting plates. The top plate and the fixed block are separated and fixed, and then the top plate is moved, so that power rods move inside sliding grooves, and then force arms at the two ends are changed; afterwards, the power rods are driven to rotate by arotating motor in the fixed block, further, rotating gears are driven to rotate, and then toothed belts at the two ends are driven to rotate; and the novel multifunctional self-regulation fitness seesaw has the advantages of being capable of automatically adjusting the weight of the two ends, being deformable and providing more fitness functions.