With the rapid development of information technology, today's society needs a comprehensive quality of skilled personnel. The traditional teacher-based teaching methods cannot adapt to the current individual differences in the secondary vocational students. In view of the needs of the society and the actual situation of students, updating the educational philosophy and researching new teaching methods for teachers have been urgent. Micro learning resource has brought much impact to the vocational computer education for its prominent theme, specific content, rich resource and diverse dissemination. This paper explores on the application of micro learning resource in computer teaching. Practice proves that it has good teaching effectiveness.