There are many reasons why menstruation does not clear and is accompanied by abdominal pain, which may be due to long menstrual periods or abnormal bleeding. The HCG test can be used to identify pregnancy-related diseases, and further ultrasonography can be used to identify them in detail and treat them according to the corresponding conditions. 2. Gynecological inflammatory diseases: such as pelvic inflammatory disease, endometritis, more serious vaginitis, etc., may have abnormal vaginal bleeding, prolonged menstruation, foul-smelling discharge with abdominal pain and other symptoms, which usually intensify after exertion, sexual intercourse and before and after menstruation, endometrial biopsy and The diagnosis should be confirmed by endometrial biopsy and microscopic examination of secretions, and can be treated with broad-spectrum antibiotics combined with anti-anaerobic drugs as prescribed by the doctor; 3, cervical diseases: cervical erosion, cervical polyps, cervical precancerous lesions, cervical cancer, etc. can lead to unclean menstruation with abdominal pain, and cervical TCT plus HPV examination, and cervical biopsy if necessary, to clarify the diagnosis; 4, other diseases: such as endometrial polyps, uterine fibroids, uterine adenomyosis, etc., there may be excessive menstruation, prolonged menstruation or abnormal bleeding, accompanied by the discharge of foul-smelling bloody discharge, and in severe cases, general weakness, pallor, shortness of breath, panic attacks and other symptoms. Vaginal ultrasound and hysteroscopy should be done in time, and a professional doctor will choose medication or hysteroscopic electrodesiccation to treat the disease. If the disease cannot be eradicated or recurs frequently, surgical treatment can be considered to remove the lesion.