Irregular vaginal bleeding is a relatively common clinical symptom in women. The reasons why women have a small amount of vaginal brown discharge during non-menstrual periods are as follows. First, there may be menstrual disorders or endometrial polyps, uterine scar diverticulum, submucosal fibroids, etc. When suffering from chronic cervical inflammation or vaginal inflammation, the shedding cells will increase and there will also be brown discharge. Third, when women take the contraceptive pill has a side effect, leakage, there will also be a small amount of brown discharge. When a woman has brown discharge during non-menstrual period, she must go to the hospital for gynecological ultrasound and cervical TCT and colposcopy. If it is caused by lesions in the uterine cavity, symptomatic treatment needs to be given promptly. In case of vaginal inflammation and chronic inflammation of the cervix, topical medication needs to be given. In case of suspected cervical malignancy, colposcopic biopsy is needed before surgical treatment to avoid delay in diagnosis and treatment of the disease.