A negative salivary acid enzyme is normal. Salivary acid enzymes are a test that reflects the balance of the vaginal flora in a white blood test. A negative result means that a woman’s vaginal environment is stable and her flora is not imbalanced. A negative test result for sialic acidase is a clinical indication that the patient does not have bacterial vaginitis and is a normal test result. If the other test results are not significantly abnormal, there is no need for concern or special treatment. When the sialic acid enzyme test results change from negative to positive, it indicates bacterial vaginitis infection and requires further treatment, which is usually done with ornidazole vaginal pessary or metronidazole vaginal pessary. Patients should not have intercourse during treatment and should pay attention to keeping the vulva clean and dry. If no pathogen is detected, but there is vulvar itching and other discomfort, bitter ginseng gel can also be used for treatment.