An automobile drive axle integral combination machinery spiral-type bulging inner mould comprises an upper mould block and a lower mould block respectively matched with the inner wall of the upper side and the lower side of an axle housing lute package. An auxiliary pressure unit used for separating and shutting the upper mould block and the lower mould block is arranged between the upper mould block and the lower mould block. Two ends of the upper mould block and two ends of the lower mould block are respectively connected in hinged mode through link mechanisms. The link mechanisms comprise hinge mounts. The hinge mounts are respectively connected with the upper mould block and the lower mould block in hinged mode through connecting rods. Spin screw mechanisms are arranged between the two hinge mounts. The spin screw mechanisms comprise screws. One end of each screw is installed on one of the hinge mounts. The other end of each screw is installed on a spiral base seat arranged on the other hinge mount. Each screw and the spiral base seat rotate around each other under the effect of force, and the length of each screw arranged between the two hinge mounts is automatically adjusted. The complete process of the continuous bulging of an automobile drive axle is better controlled, and demand for automobile drive axle bulging production is met.