Odor in the female perineum is mainly caused by inflammation of the reproductive tract, and may also be caused by organic lesions of the uterus and poor hygiene. When a woman suffers from vaginitis, cervicitis, endometritis, pelvic inflammatory disease, there will be an increase in vaginal discharge, especially when anaerobic bacterial infections, such as Escherichia coli, Gardnerella bacillus, glycogen in the reproductive tract undergoes anaerobic fermentation, the secretion accompanied by a pronounced odor, and may also be accompanied by abdominal pain, vaginal itching, fever. When a woman suffers from submucous fibroid and endometrial cancer, the bleeding is accompanied by a bad odor, which is very different from the odor caused by inflammation. The perineum is in a special position, which includes the urethra and anus in addition to the vagina, and if a woman suffers from long-term poor hygiene, the residue of urine and feces will have a distinct odor, and it is also easy to lead to vaginitis and vulvovaginitis.