An assembled Multi-Use physical fitness exerciser mainly includes the elements of metal bars, weight plates, hand grips, rubber belts, elastic rope, metal tube, supporting stands, auxiliary equipment, joint, hand protective pieces bolts, metal stoppers and end caps. With these elements one can assemble the exercises of a dumbbell set, a figure trimming bar, a barbell, a door exerciser set, a skip rope, a figure trimming skip rope, a chestpull, a rhythmic hand grip or an indoor horizontal bar.