A self-driving steel coil transport vehicle capable of active steering, comprising: a load-bearing device; two bogies arranged in a front-rear manner along a running direction of the transport vehicle, wherein the bogies are mounted below the load-bearing device; and wheels mounted under the bogies, wherein four wheels are mounted under each bogie; wherein, the load-bearing device is articulated with the two bogies, respectively, each bogie comprises: a vehicle frame, wherein the vehicle frame comprises: four wheel mounting portions, the four wheel mounting portions are pairwise disposed at lower portions of both sides of the vehicle frame, each wheel mounting portion is mounted with one of the wheels, a middle portion of the vehicle frame is provided with a bearing mounting hole facing upwardly, characterized in that the bearing mounting hole is internally provided with a horizontal stepped surface; and each bogie further comprises: a joint bearing, wherein the joint bearing is matched and connected with the bearing mounting hole, and a lower bottom surface of the joint bearing is installed on and fitted with the horizontal stepped surface; a joint support seat, wherein a lower portion of the joint support seat is a shaft end, the shaft end is insertable into an inner ring of the joint bearing and is matched and connected with the joint bearing, an upper portion of the joint support seat is a connecting portion, and the joint support seat is connected to a lower portion of the load-bearing device through the connecting portion, wherein the connecting portion is a flange, wherein the flange is provided with a fastening hole, and the fastening hole forms a circular track when rotating with the flange; and wherein each vehicle frame is provided with two locking plates, the locking plates are detachably mounted on an upper surface of the vehicle frame by a plurality of locking plate bolts, and some or all of the plurality of locking plate bolts are located below the circular track; and wherein a middle portion of the joint support seat is provided with a groove, and the locking plates are mounted above the vehicle frame and inserted in the groove or a middle portion of the joint support seat is provided with a protrusion, and the locking plates are mounted above the vehicle frame and press the protrusion. a load-bearing device; two bogies arranged in a front-rear manner along a running direction of the transport vehicle, wherein the bogies are mounted below the load-bearing device; and wheels mounted under the bogies, wherein four wheels are mounted under each bogie; wherein, the load-bearing device is articulated with the two bogies, respectively, a vehicle frame, wherein the vehicle frame comprises: four wheel mounting portions, the four wheel mounting portions are pairwise disposed at lower portions of both sides of the vehicle frame, each wheel mounting portion is mounted with one of the wheels, a middle portion of the vehicle frame is provided with a bearing mounting hole facing upwardly, characterized in that the bearing mounting hole is internally provided with a horizontal stepped surface; and each bogie further comprises: a joint bearing, wherein the joint bearing is matched and connected with the bearing mounting hole, and a lower bottom surface of the joint bearing is installed on and fitted with the horizontal stepped surface; a joint support seat, wherein a lower portion of the joint support seat is a shaft end, the shaft end is insertable into an inner ring of the joint bearing and is matched and connected with the joint bearing, an upper portion of the joint support seat is a connecting portion, and the joint support seat is connected to a lower portion of the load-bearing device through the connecting portion, wherein the connecting portion is a flange, wherein the flange is provided with a fastening hole, and the fastening hole forms a circular track when rotating with the flange; and wherein each vehicle frame is provided with two locking plates, the locking plates are detachably mounted on an upper surface of the vehicle frame by a plurality of locking plate bolts, and some or all of the plurality of locking plate bolts are located below the circular track; and a joint bearing, wherein the joint bearing is matched and connected with the bearing mounting hole, and a lower bottom surface of the joint bearing is installed on and fitted with the horizontal stepped surface; a joint support seat, wherein a lower portion of the joint support seat is a shaft end, the shaft end is insertable into an inner ring of the joint bearing and is matched and connected with the joint bearing, an upper portion of the joint support seat is a connecting portion, and the joint support seat is connected to a lower portion of the load-bearing device through the connecting portion, wherein the connecting portion is a flange, wherein the flange is provided with a fastening hole, and the fastening hole forms a circular track when rotating with the flange; and wherein each vehicle frame is provided with two locking plates, the locking plates are detachably mounted on an upper surface of the vehicle frame by a plurality of locking plate bolts, and some or all of the plurality of locking plate bolts are located below the circular track; and wherein a middle portion of the joint support seat is provided with a groove, and the locking plates are mounted above the vehicle frame and inserted in the groove or a middle portion of the joint support seat is provided with a protrusion, and the locking plates are mounted above the vehicle frame and press the protrusion.