Menstrual disorders are common gynecological diseases, manifested as abnormalities in menstrual cycle or bleeding volume, which may be caused by organic lesions or functional malfunctions, and may be influenced by a combination of many factors. The main factors causing menstrual disorders are as follows: 1. neuroendocrine dysfunction: mainly the function of hypothalamic-pituitary-ovarian axis is unstable or defective, i.e. menstrual disease. 2, ovarian problems: menstrual disorders in women of childbearing age are usually due to poor luteal function of the ovaries, often manifested as a cycle, but the cycle is shortened, or menstrual bleeding is more. 3, organic lesions or drugs, etc.: including local inflammation of reproductive organs, tumors and developmental abnormalities, malnutrition; intracranial disorders; other endocrine dysfunction such as thyroid, adrenal cortical abnormalities, diabetes mellitus, Silhan’s disease, etc.; liver disorders; blood disorders, etc. 4. Menstrual disorders may occur in people who use drugs for psychiatric treatment, endocrine agents or IUDs for contraception. Certain professions such as long-distance runners are prone to amenorrhea. 5, the cause of postpartum menstrual disorders: the most common is that breastfeeding will inhibit ovulation, making the postpartum menstrual recovery delayed. Generally speaking, it is normal for women to have irregular menstruation after childbirth, and the first few times of menstruation may be irregular after childbirth, and will slowly return to normal later. 6, psycho-emotional reasons: emotional instability, easy anxiety, depression or mental stress leading to mental discomfort, women will unknowingly find abnormal menstrual patterns, or even a long period of amenorrhea. In addition, certain abnormal bleeding during pregnancy is often mistaken for menstrual irregularities and needs to be checked and identified.