Lumen stent

The invention provides a lumen stent which comprises a bottom supporting piece, the bottom supporting piece comprises a first net-shaped area and two second net-shaped areas connected with the two sides of the first net-shaped area, the shape of the bottom of a groove can be maintained through the arrangement of the bottom supporting piece, and the risk that the bottom of the groove blocks a branch opening can be reduced when the lumen stent is subjected to radial extrusion; the structure of the first mesh area has better deformation capacity than the structure of the second mesh area, so that when the bottom supporting sheet is subjected to radial force, the second mesh area can well resist the radial force, the overall shape of the bottom of the groove is maintained, the bottom of the groove is prevented from being deformed to a large extent, and the service life of the groove is prolonged. And the first mesh area has better branch port adaptability, so that the branch port is prevented from being blocked d