Abstract: Unity3D was applied to the training field of urban rail transit in this article. The article studied mainly on modeling and control of electronic sand table of urban rail transit. The urban rail transit line scene model was set by using Multigen Creator and 3ds MAX. Unity3D was taken as 3D engine, and Visual Studio C# 2015 as script compiler. It was implemented the function of roam, control of switch positioning and reverse, the change of signal, train operation control, and human-computer interaction for the electronic sand table of urban rail transit.