Abstract: By the current“national network”natural gas pipeline facilities,mixing hydrogen into natural gas pipeline transportation can effectively solve the difficult problem of large-scale hydrogen transmission in China. The current research results on hydrogen pipeline transportation are summed up and the current situation of hydrogen pipeline construction was summarized in this paper. The safety of hydrogen transportation process is analyzed and the harm of pipeline leakage and preventive measures are expounded. The compatibility of high pressure transmission pipeline,medium and low pressure distribution pipeline,and pipeline weld are discussed respectively. The present gas interchangeability methods and equipment adaptability are summarized. The current problems of hydrogen pipeline transportation are pointed out. The influence of hydrogen mixing ratio and other parameters on hydrogen permeation,accumulation,leakage,jet fire and other safety problems are still unclear. The compatibility research between hydrogen and typical tubular products is insufficient. The related standard system about pure hydrogen and hydrogen-mixing pipeline transportation technology is lacked.