Stent conveying device and stent system

The embodiment of the invention provides a stent conveying device and a stent system.The stent conveying device comprises an outer tube, a supporting tube and a tail end connector which are sequentially connected, a mandrel tube is arranged in the outer tube and the supporting tube, a limiter is arranged at the far end of the mandrel tube and used for limiting the position of a stent, and the stent conveying device further comprises an unfolding wire, the expansion wire is arranged in the outer tube and the supporting tube and can reach the limiting stopper so that the far end of the support can be limited to the position of the limiting stopper. According to the embodiment, the structure is simple, implementation is easy, accurate release of the stent can be achieved, the requirements for release force of small and medium-sized cavity tube stents and the outer diameter of a conveying outer tube can be met at the same time, approach damage is reduced, safety and reliability are achieved, the sectional area of