Abstract: In order to simulate the actual working conditions of the speed-increasing box bearings of high-power offshore wind turbines and carry out bearing reliability analysis, a set of bearing testing machine measurement and control system was developed and designed based on LabVIEW software. The system uses the industrial computer as the upper computer, and the SIMATIC S7-1200 series PLC as the lower computer. The data interaction is established through the Profinet bus to realize the precise control of the driving, hydraulic loading, and bearing lubrication parts of the testing machine. At the same time, it can run automatically according to the preset load spectrum, with multi-parameter collection and display such as speed, vibration, temperature, pressure, abnormal alarm and automatic protection functions.