Abstract: A conveying device and a medical device. The conveying device includes a catheter mechanism and a limiting body; wherein the catheter mechanism comprises an inner tube assembly and an outer tube, and the outer tube is sleeved on the inner tube assembly and is configured to be movable along an axial direction of the inner tube assembly; the limiting body is connected to a distal outer surface of the inner tube assembly and is configured to expand or contract along a radial direction of the inner tube assembly; the conveying device is configured such that the catheter mechanism is configured to load the medical stent and to release the medical stent when the outer tube moves from distal to proximal, and the limiting body is configured to expand when the medical stent is released so as to position the medical stent in a target position.