Provided is a catheter that is manufacturable in a simplified fashion. The catheter 1 includes: a catheter tube 11 including a tip-flexible part 11A that has an inner tube (first tube 61) and a plurality of divided tube members 620 to 625 that are disposed on outer circumference of the inner tube and independent of each other; one or a plurality of metal rings disposed in the tip-flexible part 11A; one or a plurality of temperature sensors disposed corresponding to the one or the plurality of metal rings; and a handle 12 attached at a base end of the catheter tube 11. A rate of a thickness of the metal ring to an outer diameter of the metal ring is 7.5% or greater. The metal ring and the plurality of divided tube members 621 to 625 are both so disposed in the tip-flexible part 11A as to be fitted on an outer circumferential surface of the inner tube side by side in an axial direction of the catheter tube 11.