It is an object to provide an electrode catheter in which, when a rotational operation portion is operated, the rotational operation portion and an operating wire do not interfere with a lead wire, do not generate noise during the operation, and do not cause damage or breakage of the lead wire even when the operation is repeated. An electrode catheter according to the present invention includes a tube member 10, a handle 20 having a rotational operation portion 23, electrodes 31 attached to the tube member 10, lead wires 41, an electrode connector 50, and operating wires 71 and 72. A proximal end portion 12 of the tube member 10 is inserted from a distal end of the handle 20 to an inside of the handle 20, and extends in the inside of the handle 20 in the proximal end direction beyond the rotational operation portion 23. Side holes 111 and 115 are formed in a pipe wall of the proximal end portion 12 of the tube member 10. Proximal end portions of the operating wires 71 and 72 pass through the side holes and extend to the outside of the tube member 10. Proximal ends of the operating wires 71 and 72 are fixed to wire fasteners 231 and 232.
