Aunt generally refers to menstruation, 47 years old in January to two menstruation, may be due to ovulation bleeding, menstrual disorders, uterine fibroids, cervical cancer and other reasons. 1. Ovulation bleeding: 47 years old, if the menstrual flow is more regular, there will still be more regular ovulation, ovulation due to hormonal fluctuations, the endometrium local shedding leads to bleeding, usually bleeding is relatively small, about 3 days can stop by itself. 2. Menstrual disorders: Menstrual disorders may be caused by staying up late for a long time, excessive dieting, obesity, excessive stress, gynecological diseases, etc. Menstrual disorders may cause twice menstruation in a month, too much menstrual flow, too little menstrual flow, prolongation of menstrual cycle, and so on. 3. Uterine fibroids: Uterine fibroids are benign tumors formed by proliferation of uterine smooth muscle tissues. Most of the patients have no conscious symptoms, but a few of them may have abnormal menstruation, abdominal mass, leucorrhoea increase, lower abdominal distension, etc. The situation of 47-year-old women having menstruation twice a month may also be caused by uterine fibroids. 3. Cervical cancer: cervical cancer refers to cancer that occurs in the cervix of the uterus, the symptoms are not obvious in the early stage, but with the progress of the disease, abnormal menstruation, vaginal bleeding, increased vaginal secretion, frequent urination, pain and other symptoms may occur, therefore, cervical cancer may also cause menstruation twice a month. Besides, uterine polyps and endocrine abnormality may also cause twice-monthly menstruation. It is recommended that patients should consult doctor for examination in time to clarify the cause of the disease and carry out targeted treatment, and pay attention to observe menstruation in their daily life and consult doctor in time when they find any abnormality.