A degradable stent, including: a cylindrical magnesium alloy tube including an outer wall including barbs, and a magnesium alloy wire. In use, the cylindrical magnesium alloy tube is inserted in a broken or damaged lumen of human body, the barbs are inserted in the inner wall of the lumen, the magnesium alloy wire is wound around the magnesium alloy tube and the lumen, and the magnesium alloy tube is fixedly connected to the lumen of the human body.