As a high interest in low-carbon transportation, investment of the railway systems has increased. Because the layout of tracks is very complex and the movement pattern of the train is not fixed in the railway depot, there is a need for simulation technology for a more accurate analysis of the railway depot. But most previous researches and commercial simulation tools focused on the main-line. This research suggests the simulation framework for analysis of the railway depot. The simulation framework will help to develop the simulation tools of the railway depot.