More than 30 days of menstruation has not passed is a manifestation of prolonged menstruation, mostly related to adenomyosis, fibroids, endometritis, coagulation disorders and other diseases, you need to go to the hospital for examination to clarify the cause of the disease, and for the cause of the disease to give medication or surgery and other treatments. 1. Adenomyosis: Adenomyosis is a disease in which the glands of the endometrium invade into the myometrium and maintain cyclic functional changes. Patients may have increased menstrual flow, prolonged menstrual period, dysmenorrhea and other manifestations. For treatment, non-steroidal anti-inflammatory drugs, gonadotropin-releasing hormone agonists, progesterone and other medications are used, and surgical treatments such as endometrial removal and total hysterectomy are feasible in severe cases. 2. Endometritis: Patients with endometritis caused by bacterial invasion may experience increased menstrual flow and prolonged menstrual period during menstruation. For treatment, cephalosporins, metronidazole and other antibiotics are mainly used for anti-infection treatment. 3. Uterine fibroids: Uterine fibroids are benign tumors formed by the proliferation of smooth muscle in the uterus, and patients may have various abnormal menstrual symptoms such as prolonged menstrual period. For treatment, gonadotropin-releasing hormone analogs, mifepristone and other drugs to reduce the size of fibroids, oral contraceptive pills to improve the symptoms of excessive menstruation, and in severe cases, surgical procedures such as myomectomy and uterine removal are feasible. 4. Systemic diseases: such as coagulation dysfunction, thyroid dysfunction and other abnormalities can lead to prolonged menstrual period and other abnormal manifestations. It is recommended to go to the hospital for gynecological examination, gynecological ultrasound, hysteroscopy and other examinations to clarify the cause of the disease, and timely treatment of the cause and symptoms, so as not to delay the condition.