This paper analyses the system architecture and the characters of STR750 and real time OS μC/OS-II. The procedure on how to porting μC/OS-II based on STR750 is presented in detail. Important porting files and some source code are introduced. At last, the main tasks of porting μC/OS-II on NE-STR750 developing boarding with IAR EWARM IDE are introduced. This work will make next developing expediently for future application. The procedure of μC/OS-II's porting also can be a good operating system study example for computer education.