A network function has been created recently through the modification of the receiving processing system of GMS satellite cloud images. It can be used directly by both local and remote workstations. Establishment of the system solved the problem of logging network on satellite data at different hours of the day automatically. It has been achieved by utilizing TSR (Terminate and Stay Resident) advanced programming,inserting the interrupt service routine and forming a parallel time countering system in the computer to activate the interrupt. The new program is complied with Turbo C⁺⁺ and assembly language and has been applied to practice at present.