When a woman suddenly experiences menstrual arrest at the age of 47, two main possibilities are considered: 1. Abnormal pregnancy leads to menstrual arrest. The patient has had sex without contraception and must have her blood and urine HCG checked to determine if she is pregnant. If it is pregnancy, it is only necessary to determine whether it is intrauterine or extrauterine pregnancy and determine the treatment plan according to the results of the examination.2. The main consideration is that the patient is suffering from ovarian function decline, which leads to menstrual arrest. Because the average age of menopause for Chinese women is 49.5 years old, the average age range of menopause is 44-54 years old. At the age of 47, the patient’s ovarian function has declined, so it is normal for the patient to experience menstrual arrest. If the patient has no requirement for continued menstruation to rule out pregnancy, she may not undergo any treatment. If the patient wants to improve her quality of life and continue menstruation, she should have a sex hormone test, anti-Mullerian duct antibodies and ultrasound, and choose the medication according to the situation.