Abstract: To improve the accuracy of the train filling and measuring system is important for maximizing the utility of system, including avoiding over-loading and under-loading, and reducing delay of the filling work, measuring by ruler, and sales and freight transportation. Through an on-site investigation of a loading mass flowmeter and the loading process, the main factors causing errors were analyzed, and practical and effective solutions were put forward. The efficiency of the train tank loading was obviously improved and the manual labor for gauging was greatly reduced.