The invention relates to automobile front axles, in particular to an automobile front axle of a tubular structure. The automobile front axle comprises a cross bar and two cantilevers. A frame support portion is arranged at each of two ends of the cross bar. The cantilevers are connected to two ends of the cross bar respectively. Main pin holes are formed in the cantilevers. The cross bar is of a round tube structure. The frame support portions are support blocks. The frame support portions and the cross bar are welded together. A steering protection block is arranged on each of the front surface and the rear surface of each cantilever. By the automobile front axle, high in impact, distortion and steering collision resistance, of the tubular structure, the problems of high weight and poor impact resistance of existing front axles due to solid structures of cross bars as well as the problem of high fuel consumption caused by the fact that impact resistance is improved through increase of cross sections of cantilevers are solved.