A lead wire used in pacemaker is provided. The lead wire includes a lead and an electrode located on one end of the lead. The electrode electrically connects with the lead and is configured for stimulating an organ. The electrode includes a carbon nanotube composite structure. The carbon nanotube composite structure consists of a substrate and at least one carbon nanotube structure. The at least one carbon nanotube structure composites with the substrate and electrically connects with the lead. The at least one carbon nanotube structure consists of a number of carbon nanotubes. A part of the carbon nanotubes are exposed to a surface of the substrate. The exposed carbon nanotubes are in contact with the organ. In addition, a pacemaker using the lead wire is also provided.本發明涉及一種起搏器電極線，其包括一導線以及一電極頭，該電極頭設置於所述導線一端，並與該導線電連接，該電極頭用於刺激生物器官，所述電極頭包括一奈米碳管複合結構，該奈米碳管複合結構由一基體和至少一個奈米碳管結構構成，該奈米碳管結構複合於所述基體並與所述導線電連接，該奈米碳管結構由多個奈米碳管組成，部分奈米碳管從所述基體的表面露出，該露出的奈米碳管與生物器官接觸。另外，本發明還涉及一種使用所述起搏器電極線的起搏器。
