The invention provides an industrial control system and method for the IOT (Internet of Things), and the system comprises local collection equipment, a central controller, a local calculation node, and an edge calculation server node. The local collection equipment is used for collecting the data information of a product produced by local production equipment and the performance information of thelocal calculation node. The central controller is used for determining a task execution node as the local calculation node and/or the edge calculation server node through combining with the constraint conditions according to the data information of a product, the performance information of the local calculation node and the performance information of the edge calculation server node; The local calculation node and the edge calculation server node are used for executing tasks according to an instruction of the central controller and the data information of a product. The system and method provided by the invention determine the task execution node through the central controller, can effectively alleviate the network fata flow load, improves the information processing efficiency and algorithm speed, and reduce the time delay caused by calculation.