The main reason is that mycobacteria like to grow in an acidic environment, and when menstrual blood is alkaline, this alkaline blood repeatedly rinses the vagina so that a large number of mycobacteria are inhibited, so the symptoms are relieved and you think you are well, but in fact it is not cured. Once the vaginal environment is conducive to the growth of mycobacteria, they will multiply again, so there will be local redness and swelling of the vulva, vaginal itching, vaginal discharge like tofu sludge clinical symptoms, so if the diagnosis of mycobacterial vaginitis has been confirmed before menstruation, it is recommended to continue the treatment with medication after menstruation, and it is also recommended that after a course of medication, stop the medication and go to the hospital for routine laboratory tests of the leukorrhea. It is also recommended to stop the medication and go to the hospital for routine leucorrhea tests after a course of medication, and only if the three consecutive routine leucorrhea tests are (-) is it cured.