Abstract: Because the settlement method with receipt or cash exists many malpractices in oil product sales, Tianjin Huayuan Group(Tianjin)has successfully developed MICB-810 mag-card automatic fuelling management system which realizes the integration of automatic fuelling, settlement and computer management.This system makes the fuelling operation simple and convenient, and over- comes the malpractices existed in traditional fuelling method.At present, the system has been used in more than 60 fuelling stations which are in Beijing, Tianjin, Daqing, Qingdao and Jiang-men.The paper introduces the system of the design concept, system components, main functions, features and its application.The system has the two fuelling -ways-non-quantification and quantification.With the mag-card inserting into the fuelling controller, fuelling begins with the refuel-er picked off, fuelling stops with the refueler hung on when tank is full or filled to the need, later, settlement is carried on, and then the mag-card is returned.The design of the open network and multi-management are used, which is wide coverage, so the provincial data interchange can be realized so as to carry on macro-control and management.