Mycosis vaginalis is mainly caused by Candida, also known as Pseudomonas infection. Pseudomonas is a normal flora in the vagina and only causes infection when the vaginal environment changes and the resistance decreases. If the mold always recurs, the following aspects should be considered: First, the medication is not complete, and the medication is not administered according to the treatment schedule. Second, after the treatment is not regularly reviewed, not completely eradicated. Third, if the patient’s blood sugar is not normal or long-term use of antibiotics, can also lead to recurrent attacks of mycobacteria. Fourth, the male partner may have been infected with mycobacteria through conjugal life, but the male partner has not been treated, and after resuming sexual life, it will lead to the onset of mycobacteria.