The invention provides an accurate processing method for a mold with high-hardness curved surface structure. The method comprises the following steps of wherein heat treatment and brightening treatment; the heat treatment adopts on time of high-temperature quenching, three times of tempering and one time of subzero treatment; and brightening treatment is used for carried out high-frequency vibration treatment on the precisely-processed mould. According to the method, a prepared medicine type cover is high in size precision and good in surface quality, the nail breaking performance of the samebatch of products is good in stability and consistency, and the method is capable of remarkably improving the damage efficiency of a nail breaking combat part.