A USB metal pipe fitting processing device and processing method therefor, the processing device comprising an upper template (100), a lower template (300) and a material bearing plate (200), wherein the upper template and lower template are provided with a plurality of stations thereon, and the material bearing plate is disposed between the upper template and the lower template. The material bearing plate is used for clamping a to-be-processed flat metal pipe (9) and transferring the flat metal pipe between work stations so as to process the flat metal pipe disposed on at least parts of the work stations during a process of the upper template and the lower template pairing together. By means of disposing a simple structure composed of the upper template, lower template and material bearing plate, the present invention may transfer and process flat metal pipes. The USB metal pipe fitting processing device is characterized by a simple structure, a high degree of automation, high processing precision, and high
