The invention relates to a mechanical energy auxiliary sherardizing device and technology. The mechanical energy auxiliary sherardizing device comprises a sherardizing chamber, a zinc powder applying device, a mechanical sherardizing assisting device and a heating device. The sherardizing chamber is provided with a sherardizing space allowing a metal workpiece to be subjected to sherardizing treatment therein. The zinc powder applying device is used for applying zinc powder to the surface of the metal workpiece. The mechanical sherardizing assisting device is used for applying particles to the surface of the workpiece and impacting the workpiece surface to which zinc powder is applied, and therefore the sherardizing efficiency is improved. The heating device is used for enabling the sherardizing space of the sherardizing chamber to be at a preset temperature. During sherardizing treatment, the particles can be applied to the workpiece surface, and the particles are used for impacting the workpiece surface to which the zinc powder is applied, so that mechanical energy auxiliary sherardizing is realized. Thus, efficiency of the sherardizing reaction can be greatly improved, the sherardizing temperature is lowered, the sherardizing time is shortened, energy consumption can be reduced, energy waste is avoided, and energy conservation and environment friendliness are realized.