The invention discloses a machine part correction method. The machine part correction method comprises the steps that firstly, the plastic deformation direction of a part is checked, and the magnitude of plastic deformation is checked; secondly, the stress factors of plastic deformation are determined; and thirdly, the deformed portion of the part is partially subjected to high-frequency heating till the part is partially changed in crystal structure, and then external stress is applied to the deformed part. The external stress is determined according to the stress factors. The machine part correction method is designed for plastic deformation of the part, in the implementation process, the magnitude and the area of plastic deformation and the stress factors causing deformation need to be restored, high-frequency heating is adopted in the restoration process, and the deformed portion can be gradually restored to the original shape under the action of external force.