Abstract: Aiming at the problems of different construction cycles, different manufacturers, different interfaces, weak standardization, scattered information query interface, and the dispatching commanders and analysts can not query the locomotive information concerned in time, this paper designed and implemented a locomotive comprehensive application system based on locomotive data fusion by using Extract-Transform-Load(ETL) technology, Layui framework and FineReport technology. Field application shows that the system can effectively improve the efficiency of dispatching command. At the same time, data fusion can meet the personalized needs of different posts and facilitate the further expansion of the system.