Vaginal inflammation does not cause delayed menstruation. Because vaginal inflammation is confined within the vaginal mucosa and does not affect the endometrium or endocrine secretion, there is no necessary connection between delayed menstruation and vaginal inflammation. In case of clinically delayed menstruation, it is recommended to exclude the possibility of pregnancy. If there is inflammation of the vagina, different drugs are given for treatment according to the pathogenic bacteria of the infection, for example, if it is a Candida infection, treatment with mycobacterial suppositories is recommended; if it is a Trichomonas infection, treatment with metronidazole is recommended. If vaginal inflammation is not controlled and treated in time, it may cause retrograde infection, leading to inflammation of the endometrium and even of the pelvis, which may cause menstrual disorders.