Delayed menstruation is often caused by the following clinical reasons: firstly, the phenomenon of menopause caused by pregnancy, which can be detected by the early pregnancy test. Secondly, menstruation can be delayed due to certain clinical diseases, such as endocrine disorders, and also delayed due to uterine adhesions caused by a history of uterine operations, and premature ovarian failure, which can also cause menstruation to stop. The tofu-like leucorrhea is often clinically due to Candida albicans infection, caused by vulvovaginal pseudomonal yeast disease, also accompanied by severe vulvar itching and vulvar redness, in the clinical need to give the appropriate treatment, will soon make the symptoms relief. In addition, if there is a tofu-like discharge without vulvar itching, it may be a vaginal inflammation caused by Escherichia coli, so if necessary, a routine laboratory test of the leucorrhoea is needed before treatment.