A USB metal pipe fitting processing device and material bearing plate therefor. The material bearing plate (200) is arranged between an upper template (100) and a lower template (300) of a USB metal pipe fitting processing equipment, and a plurality of stations are arranged on the upper template and the lower template; the material bearing plate comprises two clamping plates (230) arranged side by side, clamping elements (240) and a transmission mechanism (250), wherein at least one clamping groove (231) is arranged on at least one clamping plate, and the clamping elements are used for elastically propping against the two clamping plates so as to enable the two clamping plates to draw close to each other in a first direction, then a to-be-processed flat metal pipe (9) is clamped to each clamping groove; the transmission mechanism transmits the two clamping plates in a second direction perpendicular to the first direction, and the flat metal pipes are transferred from a current station to a next station one af
