Women with mycosis fungoides can use baking soda for vaginal douching and also for localized vulvar cleansing. To do this, the patient puts the baking soda injection or the baking soda in a sterilized container, cleans the patient’s vulva, chooses a squatting position, and then uses a disposable vaginal douche, which is filled with the solution and inserted deep into the woman’s vagina. If there is no excessive leucorrhea or debris in the vagina, one douche is sufficient. The main purpose of the douche is to change the acidic environment of the vagina to alkaline so that the mycobacteria will lose their living environment and die, so it is useful for the treatment of mycobacteria.