The following reasons may be the cause of dryness: 1, in the recent vaginal plug a certain kind of drug, such as the use of vesicant vaginal effervescent tablets, this kind of drug will have the effect of astringency, so just stop the drug will be manifested in the vagina dryness. 2, because of the decline in the function of the ovary leads to a decline in estrogen, so that the vagina, cervical secretion decrease, so there will be a dry phenomenon of the vagina, it is recommended to draw blood to check the sex hormone 3, if ever done cervical local surgery, resulting in cervical local glands suffered damage, this case will also cause reduced secretion, vaginal dryness phenomenon, so it is recommended to combine the clinical history, combined with laboratory tests, gynecological examination analysis, and if necessary, can be treated with medication.