A manufacturing method of two eyeless suture needles comprising; a first step of obtaining a pipe-like material by rolling a metal plate material, and welding abutting portions, a second step of manufacturing a pipe-like member including: a core drawing step (fig. 3B) of reducing a diameter and adjusting a thickness of the pipe-like material by regulating an inner and outer circumferential surface of the pipe-like material using a cored bar contacting the inner circumferential surface of the pipe-like material and a dies contacting the outer circumferential surface of the pipe-like material; a tube drawing step (fig. 3C) of reducing the diameter and adjusting an outer form of the pipe-like material by regulating the outer circumferential surface of the pipe-like material using the dies without using the cored bar; and manufacturing the pipe-like member by adjusting a number of times of repetition of the core drawing step and the tube drawing step, the pipe-like member having an annular shape cross section and first and second end faces and having surface roughness constituting uniform concavity and convexity formed on an inner circumferential surface thereof; characterized by a third step of obtaining a needle base material of two eyeless suture needles including: a step of providing two linear members each having circular shape cross section with an outer diameter equal to the outer diameter of the pipe-like member and having two opposing end faces; a step (fig. 3D) of joining both linear members with the pipe-like member by butt resistance welding while abutting one of the two opposing end faces of each linear member to the respective one of the first and second end faces of the pipe-like member so that the outer circumferential surfaces of each of the linear members and the pipe-like member are in flush and thereby forming first and second joining portions; a step of processing the first and second joining portions by grinding or polishing the outer circumferential surfaces of the joining portions of the linear members and the pipe-like member so that these joining portions are flush; and thereafter a fourth step (fig. 3F) of cutting each of both end portions of the pipe-like member of the needle base material with a length for thread attaching portions being remained. a core drawing step (fig. 3B) of reducing a diameter and adjusting a thickness of the pipe-like material by regulating an inner and outer circumferential surface of the pipe-like material using a cored bar contacting the inner circumferential surface of the pipe-like material and a dies contacting the outer circumferential surface of the pipe-like material; a tube drawing step (fig. 3C) of reducing the diameter and adjusting an outer form of the pipe-like material by regulating the outer circumferential surface of the pipe-like material using the dies without using the cored bar; and manufacturing the pipe-like member by adjusting a number of times of repetition of the core drawing step and the tube drawing step, the pipe-like member having an annular shape cross section and first and second end faces and having surface roughness constituting uniform concavity and convexity formed on an inner circumferential surface thereof; a step of providing two linear members each having circular shape cross section with an outer diameter equal to the outer diameter of the pipe-like member and having two opposing end faces; a step (fig. 3D) of joining both linear members with the pipe-like member by butt resistance welding while abutting one of the two opposing end faces of each linear member to the respective one of the first and second end faces of the pipe-like member so that the outer circumferential surfaces of each of the linear members and the pipe-like member are in flush and thereby forming first and second joining portions; a step of processing the first and second joining portions by grinding or polishing the outer circumferential surfaces of the joining portions of the linear members and the pipe-like member so that these joining portions are flush; and thereafter