The invention provides a super-linear-elasticity large-deformation spring design method, and belongs to the field of mechanical spring design. The novel super-linear-elasticity large-deformation spring design method overcomes the defect that conventionally, a super-linear-elasticity spring is difficult to control alpha, and thus, a designer only needs to determine a proper helical angle value without worrying about shearing and crushing failures brought to the spring by variations of alpha; a spring designed by the method still belongs to an equal-helical-angle conical spring, a mature manufacturing technology exists for the equal-helical-angle conical spring, and the equal-helical-angle conical spring is more convenient to manufacture; and the designer can implement large-range linear elasticity only by guaranteeing a diameter d of a spring wire to meet a formula that d=AR0.5 without considering influence brought in by other parameters.