A support assembly for tower tube segment, wherein, the support assembly comprises: a fixing member, extending in a first direction; a first hinge member, stacked on the fixing member on a second direction and connected to the fixing member; a support member, spaced apart from the first hinge member in the first direction, and stacked on the fixing member on the second direction and connected to the fixing member; wherein in the second direction, a height of the support member is higher than that of the first hinge member, the first hinge member is adapted to rotatably connect with the tower tube segment and serve as a rotation fulcrum of the tower tube segment, and the support member is adapted to support the tower tube segment to maintain a position of the tower tube segment relative to the first hinge member, wherein the support assembly further comprises a second hinge member disposed on the support member, and the second hinge member comprises a third end and a fourth end opposite to each other, wherein the third end is fixedly connected with the support member, the fourth end is adapted to support the tower tube segment and rotatably connect with the tower tube segment, and a connection line between the third end and the fourth end intersects the first direction with an intersection angle of b, wherein a numerical range of b is 0° to 120°, characterized in that, the support assembly further comprises an adapting member, the adapting member comprises a first adapting lug rotatably connected with the first hinge member and a second adapting lug rotatably connected with the second hinge member, and the first adapting lug and the second adapting lug can be fixedly connected to the tower tube segment. a fixing member, extending in a first direction; a first hinge member, stacked on the fixing member on a second direction and connected to the fixing member; a support member, spaced apart from the first hinge member in the first direction, and stacked on the fixing member on the second direction and connected to the fixing member; wherein in the second direction, a height of the support member is higher than that of the first hinge member, the first hinge member is adapted to rotatably connect with the tower tube segment and serve as a rotation fulcrum of the tower tube segment, and the support member is adapted to support the tower tube segment to maintain a position of the tower tube segment relative to the first hinge member, wherein the support assembly further comprises a second hinge member disposed on the support member, and the second hinge member comprises a third end and a fourth end opposite to each other, wherein the third end is fixedly connected with the support member, the fourth end is adapted to support the tower tube segment and rotatably connect with the tower tube segment, and a connection line between the third end and the fourth end intersects the first direction with an intersection angle of b, wherein a numerical range of b is 0° to 120°, characterized in that, the support assembly further comprises an adapting member, the adapting member comprises a first adapting lug rotatably connected with the first hinge member and a second adapting lug rotatably connected with the second hinge member, and the first adapting lug and the second adapting lug can be fixedly connected to the tower tube segment.