The reason for delayed menstruation should be identified. If it is due to physiological reasons, no treatment is needed, but if it is due to pathological reasons such as polycystic ovary syndrome, medication should be given. 1. Physiological reasons: it is normal for menstruation to be delayed for less than 1 week, and no special treatment is needed, but you should pay attention to adjusting your mood appropriately, ensuring enough sleep, avoiding late nights, and paying attention to keeping warm. 2. Pathological causes: (1) Polycystic ovary syndrome: mostly seen in adolescence, it will cause delayed menstruation, and may also manifest as infertility, obesity, etc. It can be clearly diagnosed by ultrasonography and measurement of endocrine hormones. It can be diagnosed through ultrasonography, endocrine hormone measurement, etc. It is necessary to reduce weight by controlling diet and increasing exercise under the guidance of doctors, and medication can also be given, such as oral contraceptive pills, cyproterone, etc. Laparoscopic ovarian perforation is less commonly used. (2) Hyperprolactinemia: it can also cause delayed menstruation or even amenorrhea, and can also be manifested as breast overflow, etc. It can be clearly diagnosed through serum prolactin test, MRI, etc., and needs to be treated with oral bromocriptine mesylate and other medications under the guidance of the doctor, and requires surgical resection of pituitary tumors, etc. If necessary, it is necessary to remove the pituitary tumor. If your period is always delayed, you need to go to the hospital as soon as possible to find out the cause and take targeted treatment.