During the outbreak of COVID-19

medical staffs are very close to the infected person and run a high risk of infection because the protective measures are inadequate.Therefore

Personal protective equipment（PPE） has become the key for medical staff to avoid occupational exposure.In fact

even if the medical staff wear a full set of professional PPE

if they do not take it off in a proper way

there is still a great risk of infection. In view of this

this article describes in detail the problems that medical staff may encounter when using PPE during the prevalence of COVID-19 and the corresponding countermeasures

hoping to provide reference for medical staff to use PPE correctly and avoid exposure after protection.