Under "The Belt and Road" initiative, the international recognition of China's high-speed railway (hereafter, HSR) standards is gradually improving along with China's HSR "going global." However, the "going global" process of China's HSR standards still faces obstacles. Therefore, how to promote the "going global" of China's HSR standards has become an important research topic. "Going global" of China's HSR standards is essentially a process of knowledge transfer related to HSR standards. In this study, knowledge transfer theory was used to identify factors related to the knowledge transfer of China's HSR standards "going global." Furthermore, a causal loop diagram and stock-and-flow diagram were designed using the System Dynamics (hereafter, SD) method. Variable equations were constructed to quantitatively describe the dynamic relationship between the relevant factors. Subsequently, we used VENSIM software to verify the validity of the constructed SD model and conducted a simulation analysis on this SD model. Finally, conclusions were drawn on the influence of different factors on the knowledge transfer performance of China's HSR standards "going global." Among them, knowledge transfer capacity of China's HSR enterprises, accepting willingness and absorptive capacity of HSR importing countries, the trust between two parties, and China's manufacturing GVC status index all have a positive impact on the knowledge transfer performance of China's HSR standards "going global." The recessive, complexity, and specificity of HSR standards, the cultural distance and institutional distance between China's HSR enterprises and HSR importing countries, and the competitor pressure faced by China's HSR enterprises all have a negative impact on the knowledge transfer performance of China's HSR standards "going global." And the corresponding suggestions were put forward to promote the sustainable export of China's HSR standards.