Research conclusions: The paper discusses considerations and methods for the design of tunnels in high altitude, cold and permafrost area by analyzing the technical solutions for Fenghuoshan tunnel, and presents references for the similar project. The general design idea for the permafrost tunnel is ”protecting permafrost" with mufti-technique measures, including heat insulation, complex frost heave resistance, integrated waterproof, etc.，to effectively restrict freeze-thaw cycle development and to eradicate the root causes of frost heave.