The invention discloses a system used for developing mobile communication terminal equipment which has five layers: UI (User Interface); CAL (Control Achieved Layer); FTFL (Free to Platform Layer); ADI (Application Driver Interface) and DL (Driver Layer). Based on this system, developers are able to integrate terminal chips with various types effectively, quickly and in a way of striding platform, so that the efficiency of developing software of the terminal equipment is improved and the speed of developing the terminal equipment is increased.