The term “great aunt” generally stands for menstruation. Low menstrual flow and dark color may be caused by pelvic inflammatory disease, cervicitis, polycystic ovary syndrome and other factors. 1. Pelvic inflammatory disease may have symptoms such as increased menstrual bleeding, prolonged menstrual period, irregular vaginal bleeding, etc. Irregular vaginal bleeding may be manifested as scanty and dark-colored menstrual flow. The disease can be treated with antibiotics. The choice of antibiotics depends on the pathogen, such as bacterial infections can be cephalosporins. It is not allowed to drink alcohol after taking cephalosporin. 2. In addition to abnormal vaginal bleeding, cervicitis can also have vaginal itching, leukorrhea with odor and other symptoms. Cervicitis caused by Neisseria gonorrhea can be treated with cephalosporin. Pay attention to whether there is drug allergy. Cervicitis caused by chlamydia can be treated with minocycline or azithromycin. 3. Polycystic ovary syndrome is characterized by menstrual disorders, which can be manifested as scanty and dark-colored menstrual periods, hirsutism, hair loss and other symptoms. The treatment of this disease requires more exercise, diet control, and hormonal regulation of the menstrual cycle. Clinically, if the menstrual cycle is dark and scanty, it is necessary to actively consult the doctor to clarify the cause of the disease and then carry out targeted treatment, and the use of specific drugs should be under the guidance of the doctor.