Sialidase XI is usually a substance secreted mainly by Gardnerella and some anaerobic bacteria in the vagina and requires prompt medical treatment once detected. Salivary acid glycosidase in the normal condition of the content is particularly low, only when the vaginal flora imbalance caused by pathogenic bacteria overpopulation, salivary acid glycosidase will be a large number of secretion, thus causing bacterial vagina, leukorrhea abnormally increased, etc., as well as accompanied by vulvar itching, odor, and other discomforts. Patients should promptly prohibit sexual intercourse, and then promptly seek medical treatment for routine leukorrhea examination and colposcopy, pay attention to good personal hygiene, and if necessary, can also be treated with weak acidic drugs, such as chlorhexidine acetate. The medication should be under the guidance of a professional doctor, and should not be used without authorization.