The invention discloses a nonlinear variable rigidity-adjustable rubber metal spherical hinge. The rubber metal spherical hinge is composed of metal and rubber in a compounded mode, and comprises a spherical hinge outer sleeve and a spherical hinge inner sleeve; the rubber metal spherical hinge is characterized in that an axial variable rigidity adjusting device formed by compounding the rubber and the metal is arranged between the spherical hinge outer sleeve and the spherical hinge inner sleeve, and the nonlinear variable rigidity of the rubber metal composite spherical hinge is adjusted through the axial variable rigidity adjusting device formed by compounding the rubber and the metal. According to the nonlinear variable rigidity-adjustable rubber metal spherical hinge, the axial variable rigidity of the spherical hinge is adjusted, the idea that the nonlinear rigidity of traditional spherical hinge products is provided in the radial direction is completely changed, a new design idea is brought to the design idea of a bogie, the design concept of the bogie is greatly expanded, and the possibility of new bogie assembling structure is developed.