Vaginal odor may be related to factors such as poor private hygiene, infectious diseases of the reproductive tract or tumors. If the environment of private parts is poor, it is recommended to pay attention to cleanliness and change underwear in time; infectious diseases of reproductive tract, such as vaginitis, cervicitis, etc., which can be treated with sensitive antibiotics or anti-fungal drugs; tumors of the reproductive tract, such as cervical cancer, which can be treated with surgery, radiotherapy and chemotherapy. 1. Poor private hygiene environment: If you do not pay attention to personal hygiene, it can lead to odor under the vagina, it is recommended that women should pay attention to personal hygiene, change underwear in time and do a good job of cleaning the private parts. 2. Infectious diseases of the reproductive tract: such as vaginitis, cervicitis and endometritis, due to pathogenic microorganisms leading to local inflammatory changes in the vagina, so that the secretion increases accompanied by an abnormal odor. The treatment usually adopts sensitive antibiotics or antifungal drugs, such as penicillin, cephalosporin antibiotics, metronidazole and so on. 3. Tumors of reproductive tract: such as cervical cancer and endometrial cancer. Cervical cancer is due to invasion of local tumor tissues of cervix, necrosis of tumor tissues and local tissues of cervix, resulting in the appearance of a fishy smell. Endometrial cancer will also have a foul odor if the necrotic cancer cells cause infection in the uterine cavity and form fluid in the uterine cavity. Surgery, radiotherapy, chemotherapy, targeted therapy, immunotherapy and other treatments can be chosen according to the specific situation. In addition, there are many other causes of vaginal odor, it is recommended to go to the hospital in time for examination, to clarify the cause of the disease and follow the doctor’s instructions to deal with the treatment.