A coated stent graft (1), which includes: a stent portion (16) including a bare section (2) and a main section (15) and a graft tube (11) fixed on the main section (15), wherein the main section (15) includes a plurality of stent sections (17) along its axial direction. The graft tube (11) is provided with a plurality of circumferential bosses (10) along the axial direction. The circumferential bosses (10) and the stent sections (17) are alternately arranged in the axial direction. The circumferential bosses (10) arranged on the stent graft (1) can buffer damages of the apexes of the stent sections on the graft.
