The menstrual period refers to menstruation, which has been delayed for 7 days and has not yet come. Consider hypothalamic-pituitary-ovarian axis neuroendocrine disorders, other endocrine disorders, pregnancy and so on. 1. Hypothalamic-pituitary-ovarian axis neuroendocrine disorders: the normal menstrual cycle is about 21-35 days, affected by various factors, such as mental overstress, irregular diet, overwork, etc., will lead to hypothalamic-pituitary-ovarian axis neuroendocrine disorders, the menstrual period will be delayed. 2. Other endocrine diseases: early onset ovarian insufficiency, taking emergency contraceptive pills or hypothyroidism and other diseases will directly affect the hormone secretion, resulting in hormone disorders, resulting in menstruation delayed for 7 days has not come. 3. Pregnancy: After pregnancy, menstrual period will stop, if the patient has regular sex life, menstruation delayed 7 days to consider this situation, you can use early pregnancy test or go to the hospital to check the HCG level. There may be other reasons for the delayed menstrual period for 7 days, besides pregnancy, it is recommended to go to the hospital in time, complete the examination to clarify the cause of the disease, and then give targeted treatment or treatment under the guidance of the doctor.