Vaginal discharge with a fox-like smell is often clinically due to bacterial vaginosis in the first place, which often manifests itself as occasional vulvar itching, more vaginal discharge and yellowish color. It is advisable to do routine leucorrhea tests to find out if there is an anaerobic bacterial infection, which can be treated with metronidazole. Secondly, if there is foul smell in the vagina, we should be alert to exclude the possibility of cervical cancer and endometrial cancer. Because in advanced stage of endometrial cancer with co-infection, vaginal discharge has foul odor and is like slop. Again, if the cancerous tissue of the cervix is necrotic, the vaginal discharge will also have a foul odor and the discharge will often be accompanied by blood. Therefore, we must pay attention to it clinically and suggest to do relevant examination.