Occasional non-menstrual lower body flow dark brown discharge, consider physiological ovulatory bleeding, usually coffee-colored, brown or dark brown odorless, not accompanied by lower abdominal pain, itching and other symptoms, do not worry too much. If the patient continues to have abnormal discharge with symptoms such as lower abdominal pain, fever and odor of discharge, consider the following conditions: 1. Gynecological inflammation: common gynecological inflammation such as endometritis, chronic pelvic inflammatory disease and vaginitis can cause increased vaginal discharge, accompanied by symptoms such as odor of discharge and vulvar itching. The patient’s discharge may appear yellow-green, yellow, gray foamy, tofu-like leucorrhea, and with the development of the disease may all appear dark brown, accompanied by foul, fishy odor and other odors. The main treatment for gynecological inflammation is antibiotic treatment, including metronidazole, clindamycin, ofloxacin, etc., along with other targeted treatments, depending on the type of disease. 2. Tumor diseases: such as cervical, endometrial, pelvic and other parts of the tumor, mostly accompanied by symptoms of increased vaginal discharge, along with irregular vaginal bleeding, which may lead to bright red, dark red, dark brown discharge. Moreover, patients may also have accompanying symptoms such as lower abdominal pain, dizziness and weakness, fever, etc. Therefore, they need to seek timely medical attention and treat the cause. In addition, patients with cervical polyps and cervical erosion may also experience increased menstrual flow, increased sticky leucorrhea, and abnormal vaginal bleeding, which may lead to dark brown discharge from the lower body during non-menstrual periods. Therefore, patients need to consult a doctor in time for further examination to clarify the cause.