Abstract ： Research purposes ： The technical standards are playing increasingly important role in the process of railway "going-out"，when the Chinese enterprises get involved in the more and more high - end projects overseas. This article，analyzing and exploring the standards barriers from both international and domestic standards points of view，is aimed to provide a reference for the Chinese enterprises to cope with the obstacle from technical standards in the process of going - out. Research conclusions ：( 1) Put forward the current situation of standards application in overseas projects and analyze the major reasons for the obstacles. (2) Put forward the suggestions on the short - term and long - term correspondence steps for Chinese enterprises to remove technical standards barriers. (3 ) These research outcomes can be as references for the enterprises and technical personnel.