The purposes of the research were to create and evaluating efficiency of computer assisted Instruction Program for courses of Physical Fitnessbased on Standard 90/90 and analyze the leaning achievement of the student after using computer assisted instruction The samples were 20 first year diploma students in Rajamangala University of Technology Phra Nakhon North Bangkok Campus. The Researcher using the experiment by make pretestand then using the computer assisted instruction program for courses of physical Fitness. After that the students did the posttest againand then calculate to find out the efficiency of the computer assisted instruction and analyze the leaning achievement of students after studying. The result revealed that the efficiency of the computer assisted Instruction was efficient in standard 90/90 and after learming achievement