A covered stent (10) comprises a tubular main stent (11) and a connection stent (12) disposed on the main stent (11). An opening is formed in a side wall of the main stent (11). The connection stent (12) comprises a fixed segment (121) connected to the side wall of the main stent (11) and a free segment (122) connected to the fixed segment (121). Each of the fixed segment (121) and the free segment (122) comprises a stent and a coating covering the surface of the sent. One end of the free segment (122) distant from the fixed segment (121) is connected to the edge of the opening, and a gap (123) is formed between one side of the free segment (122) near to the side wall of the main stent (11) and the side wall of the main stent (11). Compared with a general built-in fenestrated stent, the covered stent (10) can effectively resolve the problem of the limitation of an adjusted angle at a connection segment of an external connection stent and has better flexibility.
