A little odor from the lower body may be normal or abnormal, depending on the degree of odor and the accompanying symptoms.1. Normal: If there is a slight sour smell in the leucorrhea secreted from the lower body, it is normal. This is because there are many flora in the normal vagina, due to the role of lactobacillus, lactic acid secretion is more, resulting in a weak acidic state of the vagina, so the lower body in a healthy state, can also have a relatively slight acidic smell; 2, abnormal situation: If the female lower body is fishy, foul smell and other odor, and accompanied by itching, burning, abnormal fluid flow, etc., it is not normal, need to be alert to Gynecological diseases. It may be caused by vulvovaginal pseudomonal yeast disease, bacterial vaginosis, trichomonas vaginitis, senile vaginitis and other factors that lead to imbalance of pubic flora and odor of secretions. In addition, cervical cancer, cervical polyps, and cervical intraepithelial neoplasia can also cause bloody leukorrhea with an abnormal odor. Therefore, when women have bad odor in the lower body, they need to consider the possibility of vaginal inflammation, etc. It is recommended to go to the hospital for routine examination of leukorrhea and, if necessary, cervical TCT and HPV, which can mostly clarify the diagnosis.