Delayed menstruation for several months in a row is an abnormal phenomenon that requires the first consultation. It is mostly considered to be related to mental factors, bad living habits, drug factors, and disease factors, and it is recommended to deal with the causes clearly. 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 that attention be paid to adjust the pressure in work and life, appropriate relaxation, if necessary, psychological counseling; 2, bad habits: frequent late night, unhealthy dieting and weight loss, addiction to cold diet and other bad habits can lead to endocrine disruption, causing menstruation to be delayed for several months in a row. It is recommended to adjust the bad habits and follow the doctor’s instructions for medication to assist in regulating menstruation. 3. Drug factors: If you take contraceptives and drugs for hyperthyroidism for a long time, they can cause delayed menstruation for several months in a row. It is recommended to use the drugs under the guidance of a doctor and reduce or stop using them if necessary. 4. Disease factors: If the menstrual cycle is delayed for more than 2 weeks for 3 consecutive months or more, it is considered to be caused by diseases such as premature ovarian failure, polycystic ovary syndrome, chronic hepatitis, etc. It is necessary to seek medical examination in time and actively treat the primary disease after clarifying the cause, so that the delayed menstruation can be gradually relieved.