Abstract: The effect of Nb-V composite microalloying on the tensile properties and extreme tip cold bending properties of 22MnB hot press forming steel was studied by using the method and standard of VDA 238-100 through room temperature tensile tests and extreme tip cold bending tests. The results show that the yield strength, tensile strength and percentage elongation after fracture of 22MnB steel after Nb-V composite microalloying were significantly improved, which was related to the reduction of grain size and martensite lath size and the precipitation strengthening of Nb-V carbide after Nb-V composite microalloying. The extreme tip cold bending angle of 22MnB steel increased by 20.5% after Nb-V composite microalloying, which was related to the more significant martensite lath bundle refinement on the tensile stress bending surface and the better deformation coordination in extreme tip cold bending. Nb-V composite microalloying significantly enhanced the maximum bending load, crack initiation work and crack propagation work of 22MnB steel during extreme tip cold bending, and improved the matching of strength and toughness.