80 postmenopausal women living in the communities near the hospital with AV (atrophic vaginitis) symptoms were recruited for this clinical trial. Patients with AV receiving external treatment and requiring hospitalization were randomized in a double-blind, single-centre trial. Subjects received CHCO (Chinese Herbal Compound Ointment) topical vaginal application in experimental group, while estriol in control group. The dosage of medicine for single treatment once a day in two group is 0.5g.The total time for therapy is 3 weeks in two groups. Assessment indicators：vagine PH, sIgA and IL-1βchanges, the degree of symptoms improving, onset time, edema-size of vaginal wall, vaginal discharge, and relapses and retreatment effect.