If the odor of the lower body is heavy, there are several common causes: 1. Personal hygiene is not good, not washing the vulva, not changing the underwear diligently, resulting in the reproduction of pathogenic bacteria, causing a great odor, it is recommended to change the underwear diligently, pay attention to personal hygiene, especially during sex and menstruation. 2. Bacterial vaginosis is caused by a decrease in body resistance and dysbiosis, resulting in the reproduction of anaerobic bacteria and causing bacterial vaginosis. 3. When cervical cancer occurs, the necrosis of cancerous tissues will lead to a foul odor in the discharge. 4.