In order to overcome the risk of long-distance natural gas pipeline, this paper puts forward a new construction method of long-distance natural gas pipeline risk and emergency system. This construction method comprehensively analyzes the risk types of natural gas pipeline, including gas transmission station, gas transmission pipeline, natural disaster and third-party damage. In addition, the construction method also describes the emergency system of natural gas pipeline from four dimensions, namely risk elimination stage, emergency preparation stage, emergency response stage and recovery stage. The research results show that the construction method can effectively control the risk of natural gas pipeline so as to ensure the normal operation of natural gas pipeline.