The 52-year-old menstruation stops for three months and then brown discharge is considered to be related to physiological factors, endometrial lesions, polyps, cervical lesions and so on. 1. Physiological factors: 52-year-old women stop menstruation for three months, is still in the perimenopausal period, the estrogen level in the body will still fluctuate, so the patient may have menstrual periods, a small amount of vaginal bleeding, brown discharge and other manifestations. 2. Endometrial lesions: for 52-year-old women, due to the gradual failure of ovarian function and the gradual decrease of ovarian follicles, patients will experience irregular ovulation or no ovulation, due to the lack of progesterone antagonism in the endometrium, so it will lead to the endometrium by the action of estrogen and the sustained growth of the endometrium, resulting in endometrial hyperplasia or endometrial carcinoma, and other pathologies, which will lead to the occurrence of irregular vaginal bleeding. 3. Polyps: For patients with endometrial polyps or cervical polyps, irregular vaginal bleeding is the main manifestation. 4. Cervical lesions: for patients with human papillomavirus infection in the cervix, there may be pre-cancerous lesions such as cervical lesions or cervical cancer, and the patient will also have irregular vaginal bleeding and other clinical manifestations. For 52-year-old patients with brown discharge after three months of menopause, it is recommended to go to the gynecology department of regular hospitals, improve gynecological ultrasound, cervical cancer screening and other examinations to clarify the cause of the disease and then actively treat it.