It is not necessary to wash the pessary after use, as it is often used clinically for gynecological inflammation such as cervicitis and vaginitis, and in recent years it has been found that the pessary can also be used to treat HPV infection with good results. After washing the vulva, insert the pessary into the vagina as deep as possible, preferably in the posterior vaginal vault, and the pessary will be absorbed slowly without washing. It is safe to use, but it is not recommended to use it for a long period of time, as it may lead to disturbance of the vaginal environment and dysbiosis, and some patients may experience chills and allergies after using it for a long time.