Failure to have a period for more than 7 days needs to be considered pregnancy and a pregnancy test can be performed. It may also be a menstrual disorder that requires lifestyle adjustments and medication if necessary. There is also a possibility that it is a manifestation of perimenopause, which can be observed regularly. 1. Pregnancy: If a woman has recently had unprotected sex and has not had her period for more than 7 days, she needs to consider whether she is pregnant. At this time, women can go to the hospital for blood test for HCG or early pregnancy test to determine whether pregnancy has occurred. 2. Menstrual disorders: menstruation is delayed for more than 7 days. After excluding pregnancy, the cause of menstrual disorders can be considered. Women can relax their minds, keep their moods happy, adjust their lifestyles and regularize their work and rest. If menstruation does not come for a long time, you can take relevant examinations to clarify the cause of the disease and then give medication. 3. Perimenopause: If perimenopausal women experience delayed menstruation for more than 7 days, there is no need to be overly concerned, as it may be the result of the gradual decline of ovarian function, which is a normal physiological phenomenon. This is a normal physiological phenomenon. Women can observe it regularly. There may be other reasons for women to delay menstruation for 7 days. If the delayed menstruation is accompanied by other uncomfortable symptoms, it is necessary to go to the hospital in time.