This paper provides an example of using failure mode and impact analysis (FMEA) to ensure the reliability of network multimedia teaching equipment. Through interviews, questionnaires and data analysis, the problems existing in equipment management were identified and the improvement measures were put forward. These are the steps used in equipment life cycle stage to ensure continuous improvement of equipment use process. It tries to encourage the use of FMEA to reduce costs, avoid defects, problems such as fault, downtime, scrap. Contrast before and after evaluation between teachers and students about improvement schemes, blind spots on the subjective understanding and operation are eliminated, equipment reliability is improved. FMEA is the active way to solve the potential failure modes. School "hardware" construction is greatly enhanced.