Objective In hospitals, users should follow relevant codes to apply, use, preserve, maintain, and dispose medical devices. However, that has not always been the case.Medical equipment departments are expected to better understand medical device users, optimize user guidance, and help users to treat medical devices. Methods A questionnaire survey was conducted and a total of 145 questionnaires were returned and analyzed. Results The results of questionnaire survey showed that the users' behaviors towards medical devices were not as rational as expected in the absence of strict rules. Conclusions Based on these results and Kohlberg's Stages of Moral Development, it can be concluded that appropriate guidance will improve user's behavior patterns when using medical devices.