Abstract: For software defect problem of electro hydraulic control system of hydraulic support, software structural features of the electro-hydraulic control system were analyzed from software testing method, software defect management framework was built, software testing schema was determined, and database structure of software defects database and software defect management flow were designed, so as to analyze software. The application shows that software quality and development efficiency of the electro-hydraulic control system are improved through software defect management.