The present invention provides a catheter provided with a tubular main body. The catheter is characterized in that: the tubular main body has defined therein a first length region and a second length region which is adjacent to the first length region and which is located closer to the distal side than the first length region； the resin hardness of the second length region is lower than the resin hardness of the first length region； and the distance from a plane perpendicular to the axial direction of the tubular main body to the joining line between the first length region and the second length region is non-uniform.
