The present invention relates to a thoracic aortic covered stent (100), comprising a bare stent segment (110) and a covered stent segment (120). The bare stent segment (110) comprises a bare wave-shaped ring (111); the covered stent segment (120) has a lesser curvature side region (100c), a greater curvature side region (100a), and two opposite intermediate regions (100b) located between the lesser curvature side region (100c) and the greater curvature side region (100a) respectively; and the covered stent segment (120) comprises a first proximal wave-shaped ring (121). The stent (100) further comprises a first connecting member (131), a first side connecting member (132) and a second side connecting member (133) all connected to the bare wave-shaped ring (111) and the first proximal wave-shaped ring (121), wherein the first connecting member (131) is arranged in the lesser curvature side region (100c), and the first side connecting member (132) and the second side connecting member (133) are arranged in the two intermediate regions (100b) respectively. The stent (100) when located near the lesser curvature side (22) with a relatively small radius of curvature has a connecting assembly rigidly connecting the bare stent segment (110) and the covered stent segment (120), and through the constraints thereof, the bare stent segment (110) can be effectively prevented from overturning towards the vessel wall during the release process, so that the proximal end of the covered stent segment (120) is securely apposed to the wall, thereby avoiding the “turnover” effect.