It is not recommended to use gel therapy on the day of menstruation, but on the second or third day after menstruation, mainly because the closure of the uterine opening is still slightly poor when menstruation has just been cleared, and it is recommended to use gel therapy on the second day when the closure is complete. If the endocervical opening is not closed well, gel therapy may bring external pathogenic bacteria into the cervix, through the cervix into the uterine cavity and cause reproductive tract infections and corresponding clinical symptoms, so it is recommended to use gel therapy after the endocervical opening is completely closed, which will be more scientific and better. In addition, if there are appropriate indications, such as increased vaginal discharge or vaginal inflammation, cervical inflammation before using gel treatment, do not use gel treatment without authorization, so as to avoid misdiagnosis or make the internal environment of the vagina was damaged.