“One Belt One Road” is a national cooperation initiative initiated by China. It is put forward against the backdrop of deepening economic globalization and accelerating regional economic integration. By describing the impact of the “One Belt One Road” initiative on countries along the routes, from the aspects of production capacity, infrastructure construction, trade promotion and people-to-people exchanges. This paper illustrates that the “One Belt One Road” initiative has a positive impact on countries, as well as a positive impact on world economic development. Although the impact of the “One Belt One Road” initiative on countries is only explained through simple data description in the paper, in the actual implementation stage, the “One Belt One Road” initiative can promote economic development and create extraordinary benefits and benefits for countries among the routes.