The invention discloses a working method of a sleeve workpiece feeding mechanism, and belongs to the field of workpiece machining and conveying mechanical equipment. A pushing mechanism and a transferring mechanism are sequentially, horizontally and fixedly arranged on the upper side of a feeding base in the horizontal direction, a reciprocating guide plate is arranged on a translation guide strip of a translation support in a sliding mode in the horizontal direction, a translation push plate which is of a circular structure and is matched with a bearing barrel material channel is vertically and fixedly arranged at the output end of a pushing air cylinder, reset tension springs are horizontally arranged on the two sides of the reciprocating guide plate and the ends of guide pipes of the translation support, the middle of the lower side of a circular transferring plate is fixedly connected with the end of the upper side of a feeding rotating shaft, and a plurality of bearing barrel mechanisms are sequentially and evenly arranged on the circular transferring plate in the radial direction of the circular transferring plate. The structural design is reasonable, sleeve workpieces can be horizontally moved, pushed and accurately placed one by one, stable and efficient transferring, feeding and machining of the sleeve workpieces are achieved, the automation degree of workpiece feeding is improved, and the requirements of production and use are met.