This paper describes the train loading system of Xingtai Mine Special Line. Aiming at the problem of eccentric loading of coal easy to occur during loading operations, the problem was solved by reforming the type of coal dumping bucket. Based on the problem of poor flat car effect for flat car, by improving the structure of the flat car, the flat coal effect reached the standard. Through these two transformations, the quality of loading operations was improved, and coal transportation and driving safety were guaranteed.