Intravascular blocking stent

The invention discloses an intravascular blocking stent. The intravascular blocking stent comprises a main stent; the main stent includes a main stent tube and an expansion end arranged at one end of the main stent tube; the expansion end includes an annular stent ring; the diameter of the stent ring is greater than the diameter of the main stent tube; an elastic covering film is arranged between the stent ring and the main stent tube; the elastic covering film includes a thin film sheet and an elastic frame arranged on the thin film sheet; two ends of the elastic frame are respectively provided with a supporting female buckle and a supporting male buckle; and the supporting female buckle and the supporting male buckle are matched with each other. Both of the expansion end and the main stent are indispensable; if the expansion end is not adopted, a fixed position cannot be guaranteed, the progress of an operation will be affected; if the main stent is not adopted, desired effects cannot be realized; and the expansion end and the main stent act simultaneously in the course of the operation, and therefore, time of the operation can be greatly saved, and the survival rate of patients can be improved.