The invention discloses a novel combined mechanical arm. The novel combined mechanical arm is ingenious in structure and powerful in function, and has the advantages that multi-azimuth and multi-angle adjustment can be realized, the work effect can be improved, the weight of grabbed objects can be detected, the objects can be conveniently sorted out by personnel, in addition, the length of the mechanical arm can be increased or decreased according to actual needs so that different requirements of the personnel can be met, and therefore the labor intensity of the personnel is greatly reduced, and the subsequent maintenance and use of the mechanical arm are facilitated.