The invention discloses a convenient-feeding arc punching machine for motorcycle accessory manufacturing. The arc punching machine comprises a workbench, wherein a support is fixed to the top of the workbench, and a vertical air cylinder is fixed to the top of the support; an arc punching rod is arranged at the bottom of the vertical air cylinder, a limiting plate is fixed on the arc punching rod,and a lower die is arranged at the bottom of the arc punching rod; and a groove is formed in the top of the workbench, a rod sleeve corresponding to the arc punching rod is fixed at the top of the lower die, an arc punching through hole communicating with the rod sleeve is formed in the top of the lower die, and a pipe fitting through hole is formed in the front surface of the lower die. According to the convenient-feeding arc punching machine for motorcycle accessory manufacturing, a metal pipe can be guided into the pipe fitting through hole through a hydraulic rod for being subjected to arc punching operation, the working efficiency of the arc punching machine is greatly improved, and the arc punching machine can be adjusted according to the pipe diameters of different metal pipes, sothat the application range of the arc punching machine is wider and the use is more convenient.