Abstract—In order to enhance the automation degree of the oil terminal operation, improve efficiency and measurement accuracy of the loading operation, and ensure operational security at the terminal, this paper describes the control process and its control strategy of automatic loading system based on the actual business of oil terminal. On this basis, the oil terminal automatic loading control system is designed and implemented. The system adopts PLC (Programmable Logic Controller), network communication technology, sensors and other advanced technologies, implementing various functions of the system which consists of a remote control part, a field operation part and a corresponding network communication device with design. The on-site operation part is used for collecting various data such as the data on the storage and transportation system, loading, shipping and process status of the storage tank area. Then the collected data will be transmitted to the remote control part through the communication equipment of the internet and the LAN (local area network). After processed by the remote control part, it is graphically displayed on the remote control screen in real time to realize tank area metering monitoring management, oil product process management, loading process management, TV monitoring management, alarm supervision and other related functions. The automatic loading control system of the oil terminal provides auxiliary support for the terminal operation, which reduces the mistakes caused by human operation and the labor intensity of the operators, improves the automation degree of the terminal operation, and ensures the safety and efficiency of oil storage and transportation.