Provided are a medical tube and a medical tube assembly which enable an implant to be easily and reliably inserted and placed to indwell in a living body. The medical tube 2 accepts an elongated implant 8 inserted therein. The medical tube 2 is composed of a tube which has a distal end opening 21 where its distal end is opening, and a proximal end opening 22 where its proximal end is opening. Besides, the tube has a curved section 231 where an intermediate portion in the longitudinal direction thereof is curved and where the curved state is maintained.
