The invention provides a medical device including a resin tube having excellent branch selectivity while excellent pushability in a curved body cavity or an extremely narrow body cavity such as a blood vessel terminal region is maintained. Provided is a medical device having a medical device body to be inserted into a body cavity. The medical device body has an elongated resin tube, the resin tube includes a first region including a distal end part and a second region including a proximal end part, and the first region is more flexible than the second region.
