Abstract: The intelligent technology has become an important driving force for today world's social and economic development and some developed countries around the world are pushing forward the construction of intelligent railways. The need and characteristic of overseas railway projects contracted by China Railway are analyzed, a solution to intelligent systems for overseas railway projects is proposed based on the trend of intelligent railways in China and available intelligent technologies. With the support of a data center, the solution covers intelligent construction, intelligent equipment and intelligent operation and maintenance of overseas railway projects. The general architecture, data architecture of the intelligent systems for overseas railway projects are described together with a highlight of the design framework of the data center, which can offer reference for the design and implementation of overseas railway projects.