Abstract: The rapid development of science and technology imposes increasingly demanding requirements for casting in the casting industry. Automatic casting techniques are key to high quality and productivity of high-speed molding production lines. Breakthrough in production techniques is the main research direction in intelligent casting. In order to meet the needs of applied technology, based on existing casting machines, a mass flow weighing system for casting machines for measurement in trade was developed. The system is easy to control and has a relatively compact structure.