A medical tube is provided, which has a detachment preventing function and provides a joint structure at lower costs without forming a step on an inner surface of the joint structure. The medical tube (1) is made of a chemical-resistant material, and includes a tube body (2) having a predetermined inner diameter (F) and a predetermined outer diameter (G), and an annular joint (3) provided at one end of the tube body (2) with respect to a longitudinal direction (X) of the tube body (2) integrally with the tube body (2), the annular joint (3) projecting outward from an outer peripheral surface (5) of the tube body (2) at an angle (D) smaller than a right angle, the annular joint (3) having a diameter progressively decreasing in a direction from a projection edge (8) toward the one end of the tube body (2).