To solve the insufficient seismic capacity of rural houses in high intensity areas, a double-layer conical non-bonded isolation bearing that has a good damping limit and simple and practical characteristics is proposed for seismic resistance of low-rise and multistorey buildings. Through the analysis of the deformation of the double-layer conical unbonded isolation bearing, third-order mechanical properties and the restoring force model of the bearing are obtained. The reliability of the numerical analysis model is verified by comparing the results of the static test of the single-layer conical non-bonded isolation bearing and those of a finite element model. Based on the numerical model of the bearing, the influence of the main parameters, such as the thickness of rubber material, inclination angle of the bearing, vertical compressive stress and horizontal displacement on the mechanical properties and energy dissipation capacity of the double conical isolation bearing, is further investigated. The results show that an increase in the thickness of the rubber material leads to a higher energy dissipation of the bearing. Furthermore, the increase in inclination angle results in a higher third-order stiffness of the bearing. Finally, based on the structural response analysis of the double conical non-bonded isolation structure, the structure composed of the double conical non-bonded isolation bearing has good damping effect.