An electrode lead of a pacemaker includes a lead wire. The lead wire includes at least one sub-lead wire and an electrode head. The sub-lead wire includes a core wire structure, a first insulating layer and a carbon nanotube composite structure. The first insulating layer coats on an outer surface of the core wire structure. The carbon nanotube composite structure is wound around an outer surface of the core wire structure. The electrode head is disposed on an end of the lead wire and electrically connected with the core wire structure of the sub-lead wire. The pacemaker includes a pulse generator and the electrode lead electrically connected to the pulse generator.
