The utility model belongs to the technical field of hair transplantation devices, and discloses a special instrument for a hair transplantation operation, which is provided with a metal cylinder, theinner side of the button is tightly attached to the surface of the outer side of the metal cylinder, the lower side of the button is tightly attached to a semicircular piece, the other end of the semicircular piece is connected with a support welded to the surface of the outer side of the metal cylinder through a rotating shaft, and the lower side of the semicircular piece is tightly attached to asupporting rod. A hair follicle outlet is welded to the lower end of the metal cylinder, a hair follicle storage tube is connected above the hair follicle outlet coinciding with the tail end of the expansion nail, and the upper end of the hair follicle storage tube is connected with a button through a connecting rod. According to the hair follicle implantation device, hair follicle implantation is conducted while pores are expanded through the metal cylinder, the slideway is embedded, hair follicle implantation is conducted according to the mechanical principle, hair implantation efficiency is improved, the surface of the metal cylinder is smooth, the slideway is embedded, hair implantation precision is improved, the hair follicle storage tube is pressed down through the connecting rod, hair follicles are implanted into expanded pores from the hair follicle outlet synchronously, and efficiency is high.