A tank container comprising: a tank body; and a frame supporting the tank body, including: two end frames for respectively supporting two ends of the tank body; a plurality of saddles disposed at intervals along the longitudinal direction of the tank body and supporting the bottom of the tank body, wherein each of the saddles is provided with a concave bearing surface which is matched with the circumferential contour shape of the bottom of the tank body to bear the tank body; and a bottom supporting component for connecting one of the end frames and the adjacent saddle, including: a connecting beam, one end of which is connected to a bottom corner of the end frame, the other end of which is connected to the saddle, wherein an interval height is formed between the connecting position of the connecting beam and the saddle and the bottom of the saddle, and a supporting member connected to one end of the connecting beam that is close to the adjacent saddle, and provided integrally with a supporting plate extending longitudinally along the tank body and the supporting plate fixedly connected to the tank body, characterised in that the supporting member is integrally formed by bending, and further comprises a transition plate connected to the supporting plate by bending and a connecting plate connected to the transition plate by bending; wherein the connecting plate is connected to the connecting beam and parallel with the axis of the connecting beam. a tank body; and a frame supporting the tank body, including: two end frames for respectively supporting two ends of the tank body; a plurality of saddles disposed at intervals along the longitudinal direction of the tank body and supporting the bottom of the tank body, wherein each of the saddles is provided with a concave bearing surface which is matched with the circumferential contour shape of the bottom of the tank body to bear the tank body; and a bottom supporting component for connecting one of the end frames and the adjacent saddle, including: two end frames for respectively supporting two ends of the tank body; a plurality of saddles disposed at intervals along the longitudinal direction of the tank body and supporting the bottom of the tank body, wherein each of the saddles is provided with a concave bearing surface which is matched with the circumferential contour shape of the bottom of the tank body to bear the tank body; and a bottom supporting component for connecting one of the end frames and the adjacent saddle, including: a connecting beam, one end of which is connected to a bottom corner of the end frame, the other end of which is connected to the saddle, wherein an interval height is formed between the connecting position of the connecting beam and the saddle and the bottom of the saddle, and a supporting member connected to one end of the connecting beam that is close to the adjacent saddle, and provided integrally with a supporting plate extending longitudinally along the tank body and the supporting plate fixedly connected to the tank body, characterised in that the supporting member is integrally formed by bending, and further comprises a transition plate connected to the supporting plate by bending and a connecting plate connected to the transition plate by bending; wherein the connecting plate is connected to the connecting beam and parallel with the axis of the connecting beam.