A design of portable electrical instrument verification system interface based on Qt was presented, the design of modules such as window widgets, database, file management and mouse and keyboard responding events were achieved. Besides, the program transplant was completed in the embedded Linux system. According to the verification, the characteristics of the system interface were configuration flexible and friendly. Users can complete the automatic test, data storage, exporting test reports by setting the parameters and testing plans. The design in this work can meet the requirements.