This paper deseribes the idea of Data-oriented Chilifur Authorina System(system name: CAITOOL). CAITOOL, was programmed in PASCAI, language under environment of ET Chinese system, base on independ modulerand data structure. Any courseware desisned by this system only include fileof integer data type (two hytes). so these courseware can he run in differentsoftware or hardware environment. Programmer can design different translator program to-explain these cotirseware data, it will increase the portabilityof CAI courseware.