Abstract: With the emergence of environmental pollution, resource shortage and other problems, energy conservation and emission reduction have increasingly become an urgent problem to be solved in the automotive industry. As an important part of the car, wheels require energy saving and environmental protection and good comprehensive performance in actual production, so it is urgent to develop low-cost and high-performance wheel steel. Based on the C-Mn-Nb-V-Ti composition system, the research was carried out first for the research and development of 700 MPa grade wheel steel. The composition design was carried out, the reasonable control rolling control cooling process parameters were formulated, and the microstructure and mechanical properties of the test steel were analyzed. The results show that the test steel has good mechanical properties, its yield strength is 630 MPa-645 MPa, tensile strength is 735 MPa-745 MPa, the flexural strength ratio is 0.85-0.86, the elongation rate is 24.6%-25.8%, and the impact work in the temperature range of -60 ℃-20 ℃exceeds 80 J.