An ultralong multifunctional movable conveyer comprises a conveying cantilever crane, a power system, a driving roller, lifting mechanisms, an amplitude varying mechanism, supporting rods, a groove strip, slide plates, a stabilizing rod and rolling wheels. The conveying cantilever crane is formed through hinge of two sections of cantilever crane bodies with different lengths. The lifting mechanisms are driven by adopting a hydraulic oil cylinder, a shear-fork mechanism is mounted below a main beam of the conveying cantilever crane, and the slide plates are mounted below the lifting mechanisms.The amplitude varying mechanism is arranged at the position where the two sections of cantilever crane bodies are hinged to each other. The supporting rods are symmetrically arranged in the left andright, one ends of the supporting rods are hinged to the middle section of the cantilever crane, the rolling wheels are mounted at the other ends of the supporting rods and roll along an inner grooveof the groove strip, and a rolling wheel shaft is matched with a side edge groove of the groove strip. One end of the stabilizing rod is hinged to a main beam on the side face in the middle of the conveying cantilever crane, and the other end of the stabilizing rod can move freely. The ultralong multifunctional movable conveyer has the characteristics that the conveying distance is long, the lifting structure is simple, the amplitude of variation is large, the lifting height is high, the angle of a conveying cantilever is adjustable, the ground adaptability is high, and the using cost is low.