Delayed menstruation for several consecutive months is an abnormal phenomenon, which needs to be consulted at the first time. It is mostly considered to be related to mental factors, bad habits, medication factors, and disease factors, and it is recommended to deal with the cause after clarifying it. Common causes and treatments: 1, mental factors: long-term in a tense, depressing environment, easy to affect the level of hormone secretion, resulting in several consecutive months of delayed menstruation, but generally delayed within 7 days. It is recommended to pay attention to the adjustment of work, life stress, appropriate relaxation, if necessary, psychological counseling; 2, bad habits: frequent late nights, unhealthy dieting to lose weight, eating cold diet and other bad habits, will lead to endocrine disorders, causing menstruation delayed for several months in a row. It is recommended to adjust the bad habits, and follow the doctor’s instructions for drug-assisted menstruation therapy; 3, drug factors: if long-term use of contraceptive pills, the treatment of hyperthyroidism drugs, can be caused by several months of delayed menstruation. It is recommended to use drugs under the guidance of the doctor, if necessary, can be reduced or discontinued; 4, disease factors: if three consecutive months and more delayed menstrual cycle more than 2 weeks, mostly considered to be premature ovarian failure, polycystic ovary syndrome, chronic hepatitis and other diseases caused by the need to consult a doctor in a timely manner for examination, to determine the cause of the disease and actively treat the primary disease, the delay in menstruation can be gradually alleviated.