Normal menstruation is cyclical and self-limiting, with an average cycle of 28 days and an average menstrual period of 4-6 days. The second type is ovulatory menstrual disorders. If pregnancy can be ruled out, it is recommended to go to the hospital for ultrasound examination and, if necessary, reproductive hormone recheck. If endometrial thickening and abnormal occupancy are found inside the uterine cavity, diagnostic scraping or hysteroscopy can be performed to clarify. If ovulatory menstrual disorders are present, then there may be ovulatory bleeding, which can be treated with luteinizing support.