The present disclosure discloses a technical method for treating vitiligo through hair follicle melanocyte stem cell transplantation. The technical method comprises the following steps: extraction of hair follicles; separation of hair follicles; in-vitro culture of hair follicle melanocyte stem cells; inactivation of hair follicles; and transplantation of hair follicle melanocyte stem cells. According to the present disclosure, outer root sheaths of hair follicles containing the hair follicle melanocyte stem cells are obtained through a precise extraction and separation method. Through in-vitro separation and culture and inactivation of hair follicles, a situation that vitiligo only turns black without hairs after surgery is achieved. Through precise transplantation, the original color of the punctate multi-hair follicle orifice can be restored, thereby achieving the purpose of rapidly removing white patches.