In order to overcome the problem of advance high-strength steels (AHSS) bending tube component with serious springback defect, this paper proposes a new control method - Tube hydro-forging to eliminate the springback of such parts. Its mechanical principle is to apply a certain degree of compression deformation along the circumferential direction of the bending tube through the radial clamping of the upper die (perpendicular to the bending axis), so that the axial stress is all transformed into compressive stress, that can eliminate the axial stress difference between compressive stress on inner layers and tensile stress on outer layers which caused by bending, so reaching the purpose of basically controlling springback. That is exactly the opposite of the mechanical principle of the stretch bending. This paper adopted two methods containing finite element analysis and experimental verification to explain the eliminate springback mechanism for the RHFB. It is found that the springback value decreases with the increase of compression, and there is a certain minimum punch stroke. For AHSS with strength of 800 MPa, the springback angle could be reduced by more than 95%.