Stabilizer bar structure, preparation method thereof and automobile

The invention relates to a stabilizer bar structure, a preparation method thereof and an automobile, and relates to the technical field of automobiles. The stabilizer bar structure comprises a first bar body and two second bar bodies, and the two second bar bodies are fastened to the two ends of the first bar body respectively. Wherein the outer diameter of the first rod body is d1, the outer diameter of the second rod body is d11, and d11 is larger than d1; the inner diameter of the first rod body is d2, the inner diameter of the second rod body is d22, and d22 is equal to d2. The wall thickness of the second rod bodies at the two ends is larger than that of the first rod body in the middle, and the rigidity of the second rod bodies is larger than that of the first rod body in the middle, so that the torsion deformation stress of the stabilizer bar structure is transmitted to the first rod body through the second rod bodies; and the probability of failure caused by stress concentration at a welding seam when