Under the background of the "Belt and Road", international railway transportation has shown a good development trend. The China Railway Express has entered a new stage of high-quality development from high-speed development. Accurately positioning the target market and exploring the competitive advantages are the keys to formulating a high-quality development strategy for the China Railway Express. In this paper, the cargo is subdivided according to the value characteristics of goods and mathematical, physical and chemical theory III, and a logit model of competition between China Railway Express and other transportation modes is established. At the same time, the Chongqing-Duisburg (long) and Urumqi-Almaty (short) routes are used to analyze the case, and the competitiveness of the China Railway Express in different situations in each market segment is studied to draw conclusions and propose development strategies. the background of "One Belt And One Road" is put forward.