Abstract: Objective To solve the problem that medical device adverse event monitoring entities perform their duties inadequately, to provide reference for perfecting the post-market surveillance system. Method Through theoretical and empirical research, the paper explored the ways to improve the performance of monitoring the adverse events of medical devices. Results The survey found that the number of adverse event monitoring reports was few and the quality of report was poor. The root causes included lack of motivation of monitoring entities, the imperfect monitoring system, and the monitoring capability failure, etc. Conclusion The methods such as strengthening the main body responsibility consciousness, establishing evaluation system and accountability system, building social work network, are beneficial to the adverse events monitoring.