Abstract: Digital twin is an effective technical means to realize digital transformation and intelligent upgrading of railway. The Test Base of Beijing East Circular Railway has problems such as test tasks conducted in the base are relatively independent and lack of unified monitoring and control. Therefore, the integrated circular railway collaborative test platform is studied and developped, which can realize global data assets management, asset management, schedule management, and other integrated applications based on the digital twin model of the test base. This platform is helpful to optimize resource allocation and facilitate test process reengineering of the test base, thus further improve the capacity of test services of the test base, provide technical support for the digital and intelligent transformation and upgrading of the test base.