An electrode catheter is provided wherein: a catheter shaft (10) having an eccentrically-formed lumen (11) serving as a path for fluid, an irrigation member (20), and a tip electrode (30) are provided； a plurality of irrigation holes (25A) are provided to the irrigation member (20) at equiangular intervals to the irrigation member (20)； an eccentric path (23) that connects with the lumen (11) of the shaft (10), a storage space (24) for liquid that connects to the eccentric path (23) and has no partition walls in the peripheral direction, and a plurality of branching paths (25) that connect with the storage space (24), extend in the tip direction while inclining toward the outside, and arrive at each of the irrigation holes (25A) formed on the inner section of the irrigation member (20)； the irrigation member (20) comprises a first part (21) and a second part (22)； the eccentric path (23) is formed on the inner section of the second part (22)； the branching paths (25) are formed on the inner section of the first part (21)； and the storage space (24) is formed in the portion where the first part (21) and the second part (22) fit together. This electrode catheter makes it possible to uniformly irrigate the surface of the tip electrode (30) in the peripheral direction using liquid supplied from the lumen of the eccentrically-formed shaft (10).
