Abstract: Data processing methods and file formats between thermal,structural and optical analyses are studied.An interface program,adopting techniques of automation in data transfer,is developed with the Matlab language to transfer data between different codes.To verify the validity of the program,the primary mirror of some VHRT(very high resolution telescope)is taken as example.Its performance after applying thermal load was analyzed using thermal/structural/optical integrated method of analysis and the system was then re-optimized.The results proved the correctness of the method and validity of the interface program.