Abstract: In order to design a kind of software with high universality and flexibility for data processing,the frame structure of aerospace test data was analyzed,and the general methods of file operation in C,C++and MFC were discussed.Data unpacking,analysis and other treatment methods were studied combined with relational functions in Win32 API.According to the analysis of data frame and mixed-framed packet structure,the universal data processing software was programmed in Visual C++6.0.By means of practical testing verification,the proposed methods and software had been proved having some universality and flexibility to carry out several types of test data analysis effectively.Meanwhile,the proposed software had been successfully applied to a number of aerospace test tasks,which provided the reliable basis for relational tests and experiments.