Normal menstrual cycle is usually about 28 days, advance or delayed 7 days are within the normal range, if the previous menstrual period is relatively regular, suddenly did not come, you can first observe. If the delay is more than 7 days, the main consideration is that it may be caused by pregnancy, physiological amenorrhea, systemic diseases, endocrine disorders, psychiatric factors, organic lesions of the reproductive organs, medication factors, etc. 1, pregnancy: for women of childbearing age, if the menstrual period has been relatively regular in the past, and if you have had sex recently, and your period is delayed for more than 7 days, it may be due to pregnancy, and we recommend that you go to the hospital and have blood drawn to check for chorionic gonadotropin to clarify the condition of your period. It is recommended to take blood test for blood chorionic gonadotropin to make a clear diagnosis; 2. Endocrine disorders: mainly various factors affect the neuroendocrine regulation of the hypothalamus-pituitary-ovarian axis, which leads to regular menstruation delay, most commonly seen in pituitary tumors, polycystic ovary syndrome and so on. Pituitary tumors are treated with surgery (pituitary tumor removal), medications (e.g., oxytocin, growth inhibitors), and radiation therapy. Polycystic ovary syndrome can be treated by taking drugs that regulate the menstrual cycle, such as short-acting contraceptives, progesterone, etc.; 3, organic lesions of reproductive organs: cervical and uterine adhesions, etc., which can be treated surgically with cervical dilatation, placing drains in the uterine cervical canal, etc.; 4, systemic systemic diseases: for example, pulmonary tuberculosis, anemia, etc., all of them may lead to delayed menstruation, due to the active treatment of the primary disease, pulmonary tuberculosis can be For positive treatment of the primary disease, tuberculosis can be treated with anti-tuberculosis therapy, isoniazid, rifampicin and other drugs, anemia can be supplemented with iron, and if the anemia is more serious, blood transfusion can be used for treatment; 5, mental factors: sudden or prolonged mental depression, tension, anxiety, emotional changes or psychological trauma, etc., may affect the hypothalamus, the pituitary gland and other parts of the function of the abnormality, leading to delayed menstruation, it is recommended to maintain a good mood or go to the Psychological Department for guidance or medication; 6, the influence of medication. Drugs: Taking hormone-containing drugs such as progesterone and emergency contraceptive pills can prolong the luteal phase and cause delayed menstruation. In this case, it is recommended to stop taking the drugs and observe whether the menstruation can return to normal; if it can return to normal, usually there is no need for any special treatment, but if it cannot return to normal, it is necessary to go to the hospital for further checkups. If you suspect that the delayed menstruation is caused by pathological factors, you need to go to the hospital as soon as possible to do the relevant examinations, such as blood routine, six hormone tests, CT, gynecological ultrasound, etc., to clarify the cause of the disease, and then targeted guidance for the use of medication.