A one-piece stent implanter, comprises a front handle (10) and a rear handle (14), wherein the front end of the front handle (10) is provided with an outer pipe (7) whose top is flexibly connected with a cautery tip (1), the outer pipe is internally provided with a middle pipe (6) for receiving a stent (4)； the rear handle (14) comprises a stainless steel pipe (12) for supporting an inner pipe (3) positioned in the stainless steel pipe, the top of the inner pipe (3) being fixedly connected to the cautery tip (1)； wherein one end of the middle pipe (6) is adapted to touch and connect with one end of the stent (4), while the other end of the middle pipe is mutually connected with the stainless steel pipe (12)； allowing one end of the stent to be positioned close to the cautery tip, with a certain gap； such that when the front handle (10) is retreated along the stainless steel pipe (12), the outer pipe (7) simultaneously retreats and separates from the cautery tip (1), the positions of the middle pipe and the rear handle remaining unchanged, whereby the stent (4) is automatically released.
