Weighing in and out of the chemical plant weighbridge system automatically calculates the weight of incoming and outgoing goods through the weighbridge weighing system, synchronizes the data of weighing software to the posts of Finance and weighing administrator, identifies vehicles through license plate recognition, vehicle IC card, and other anti cheating monitoring, such as monitoring capture, high-definition video, etc., and configures high-precision weighing sensor for accurate weighing, so as to improve enterprise efficiency and efficiency.