In order to protect the "going abroad" of Sichuan-Tibet railway-related technologies, this paper takes the overseas layout of patents as the focus, studies the risks of overseas patent layout of Sichuan-Tibet railroad construction technologies through general method, data search method and case study method, analyzes the insufficient number of overseas patent layout of Sichuan-Tibet railway-related technologies, the imbalance of layout areas, and faces foreign railroad patent jungles. The current situation of technology patent jungle contains, and the risk factors of high risk of patent infringement of Sichuan-Tibet railroad technology, high possibility of patent malicious lawsuit, and difficulty of integration into international railroad market is derived. Sichuan-Tibet railroad construction enterprises should actively build patent families, coordinate overseas traditional and new market patent layout, actively carry out patent countermeasures and actively respond to lawsuits in the process of going abroad.