It is reported that this utility model patent was developed by the Technology Center of Valin Company, and it is a double-sided supporting balanced axle suspension, including a frame, a longitudinal beam, a fifth cross beam, a middle bridge, a rear axle, a balanced shaft, a leaf spring, an upper thrust rod and a lower thrust rod, and belongs to a heavy-duty automobile. Characterized in that two ends of the web of the fifth cross beam are respectively provided with balance shaft support blocks, and the cross section of the balance shaft support blocks is a right triangle with ribbed plates. The vertical surfaces of the balance shaft support blocks are respectively connected with the inner side surfaces of the two longitudinal beams of the vehicle frame through bolts, while the bottom surfaces of the balance shaft support blocks are connected with the bottom plates of the balance shaft suspension and the fifth cross beam through bolts, that is, each balance shaft support block is connected with the vehicle frame and the balance shaft suspension at the same time, thus playing the role of double-sided support;