Abstract: The Belt and Road works actively for promoting China's international energy cooperation. Hence, the safety evaluation of offshore gas transport channels with reference to the actual Belt and Road cooperation practice has an important theoretical and practical value. Taking into account the construction practice of the Belt and Road, the nationallevel natural gas cooperation, and the impact of COVID-19 pandemic on the international natural gas supply pattern, research on the safety of offshore gas channels was performed with the evaluation model indicators determined based on the five connectivity indexes along the Belt and Road, the national gas agreement and the COVID-19 pandemic, and solution made by PP-RAGA-K-means algorithm. The research results show that the factor of "the Belt and Road" has a positive impact on the safety of China's offshore gas channels, and the national offshore gas channels that are located along the Belt and Road and where strong national strength is present are the safest. Conclusively, the research results provide a scientific basis for China to develop international cooperation and the relevant departments to formulate safety measures for offshore natural gas transportation.