Provided is a catheter having higher functionality. An electrode catheter 1 includes a manipulation section, a shaft 2, and manipulating wires PW1 and PW2. The shaft 2 extends to include a base end region A1, an intermediate region Am, and a distal end region A2 that are arranged in order from the manipulation section side, and is provided with a first passage and a second passage that penetrate those regions. The manipulating wires PW1 and PW2 are respectively inserted into the first passage and the second passage. A distance between a lumen 4H1 and a central axis CL is less than a distance between a lumen 5H1 and the central axis CL, and a distance between a lumen 4H2 and the central axis CL is less than a distance between a lumen 5H2 and the central axis CL. Lumens 6H1 and 6H2 are so inclined relative to the central axis CL as to be away from each other as they head to the distal end region A2 from the base end region A1. The shaft 2 includes, in the base end region A1, a multi-lumen tube 40 formed with the lumens 4H1 and 4H2.本發明提供一種具有更高功能的導管。該電極導管1具備操作部、軸2、操作引線PW1及操作引線PW2。軸2包含從操作部側依序排列的基端區域A1、中間區域Am與前端區域A2而延伸，並且，設置有將該等貫通的第一通路及第二通路。操作引線PW1、PW2插通於第一通路或第二通路。管腔4H1與中心軸CL的距離比管腔5H1與中心軸CL的距離近，管腔4H2與中心軸CL的距離比管腔5H2與中心軸CL的距離近。管腔6H1、6H2以隨著從基端區域A1朝向前端區域A2而互相遠離的方式，對中心軸CL傾斜。軸2在基端區域A1具有形成有管腔4H1、4H2的多腔管40。
