A woman’s vagina has a bad smell to consider with gynecological inflammation, malignant tumors and so on. 1. Gynecological inflammation: when patients have gynecological inflammation such as vaginitis and pelvic inflammatory disease, due to the massive reproduction of anaerobic bacteria, mycoplasma and other pathogens in local tissues, which react with normal secretions produced by the mucosa, the odor such as ichthyophilous odor will appear, accompanied by a large amount of leukorrhea, vulvar itching and other discomforts. 2. Malignant tumors: when patients have malignant tumors such as cervical cancer and vulvar cancer, due to the rapid growth of cancer cells, if the local blood supply is insufficient, it will lead to necrosis of the tissues, which will result in bad smell and other odors. For women with vaginal odor, it is recommended to go to the gynecology department of regular hospitals to improve the ultrasound, leukorrhea and other related examinations, and to clarify the cause of the disease and then actively treat it under the guidance of doctors.