According to Xinjiang's regional characteristics of high seismic frequency and the entire area covered by frozen soil, this project try to research a simple composite isolation system for houses in villages and towns, while frost heaving of ground base could be eliminated by the isolation system. The layout of the structure is: pave sand cushion under the foundation of building, set ring beam with some rubber bundles at outdoor ground level and pave a mortar layer with lower strength along the middle height of the ring beam. The working mechanism of the structure is: under small earthquake, only sand cushion play the isolation role, the main sesmic capacity depends on structure itslef.under medium or large earthquake, mortar layer with lower strength is cracked, ring beam is divided into two parts, the main structure integrally slide along with the top ring beam, and rubber bundles are deformed to constrain displacement of main structure, ring beam play the damping role, the composite isolation system is formed. Through paving sand cushion and setting ring beam, the hazard of frost heaving force to building is eliminated. In the project, theoretical analysis, numerical simulation and experimental study would be used as research techniques, the calculation model of composite isolation structure would be established under different earthquake level, the mechanism of damping vibration would be studied, and the effect of arrangement of sand cushion and rubber bundles, temperature would be analyzed. Ultimately, the layout principle, optimal design parameters and related constructional detail measures of composite isolation system would be determined. The system has the advantages of simple structure,convenient construction and low cost. It embodies the seismic principle of towns and villages. In the process of construction of small towns and new socialist countryside in Xinjiang, the composite isolation system will have a wide application prospect.