In May 2015, the renovation project of the centralized control system in the coking plant of Liuzhou Iron and Steel (Group) Co., Ltd. was successfully completed. The project includes three sets of 40kg test coke ovens, five sets of coke strength measurement devices after reaction, and 20 sets of monitoring systems for the testing process of bituminous coal resin layer. It was developed and developed by Shenyang Kedi Tongda Mining Machinery Co., Ltd. The hardware used is Siemens S7-400 PLC and bidirectional controllable silicon power module, The software adopts the large lag temperature fuzzy PID control algorithm independently developed by Kodi Company. According to national standards, it completes the entire process of computer automation test operations, including 3 sets of 40kg test coke ovens, 5 sets of coke reaction strength measurement devices, and 20 sets of bituminous coal resin layer test process parameter control, test data measurement and recording and calculation, volume curve drawing, result analysis and reporting. The excellent quality of the control and measurement links of the system ensures that the test results have good working characteristics, more accurately reflect the characteristics of coke, the system technology is advanced, the integration is high, and the use and maintenance costs are greatly reduced.