Elderly vaginitis with ornidazole is not effective, it is recommended to choose metronidazole effervescent tablets. Ornidazole is the 3rd generation of nitroimidazole derivatives, this drug is mainly targeted at trichomonas vaginitis, this drug is mainly through the molecular nitro in the anaerobic environment to reduce to the amino group, or through the formation of free radicals and cellular components of interactions leading to the death of microorganisms, the effect of the treatment of trichomonas vaginitis is very good. Age-related vaginitis and estrogen level is reduced, vaginal wall atrophy leads to local resistance is reduced, which in turn leads to bacterial infections, the more common is Escherichia coli and staphylococcus bacteria and other miscellaneous bacteria, metronidazole effervescent tablets is an anaerobic bacterial anti-drugs, for the above two kinds of bacterial treatment effect is relatively good. In addition to using metronidazole effervescent tablets, geriatric vaginitis also requires estrogen supplementation to increase vaginal resistance and inhibit bacterial growth. It should be noted that all drugs may have adverse reactions, and should be used correctly under the guidance of a doctor, avoiding self-medication.