Vaginitis requires physical examination, vaginal pH measurement, vaginal secretion examination, hormone level and other tests. 1. Physical examination: It is necessary to examine the patient’s vulva, clitoris, urethra, vaginal opening, vaginal mucosa, cervix, and sometimes it is necessary to use a dilator. 2. Vaginal pH measurement: It is necessary to take vaginal secretion with sterile test paper and apply it to precise pH test paper to determine the pH of the secretion. Usually, the normal range of vaginal pH for adult women is 4.0-5.0, and if combined with infections, there may be a change in pH. 3. Vaginal secretion examination: no vaginal douching or medication is allowed before collection of vaginal secretion, and sexual intercourse should be avoided 24-48 hours before the examination, through which the vaginal secretion examination can clarify trichomonas and bacterial infection. 4. Hormone level: If patients with atrophic vaginitis have a significant decrease in hormone levels, the diagnosis can be aided by testing the level of estradiol in the serum. It is recommended that patients with vaginitis should consult the doctor in time to find out the cause and standardize the treatment under the doctor’s guidance.