If there is an acidic smell in the vagina, the most common cause is due to local inflammation of the vagina, often manifested as increased vaginal discharge, odor, yellow color, and localized congestion of the vaginal mucosa during a gynecological examination. It is recommended to have a routine laboratory test of the leukorrhea to treat the infection according to the pathogenic bacteria. In addition, if there is an acidic smell in the vagina, it is also necessary to exclude the odor of the discharge caused by the local inflammation of the cervix and the inflammation of the pelvis. It is recommended to have cervical cancer screening once a year, mainly to find out whether there are lesions in the cervical epithelium and then give treatment according to the results. Even in the absence of any discomfort, it is recommended to have a gynecological examination once a year to find out whether there is inflammation, superfluous organisms, cervical lesions, and abnormalities in the pelvis.