Tofu-like discharge is a typical symptom of mycosis fungoides, which is related to Candida albicans infection and can be diagnosed by laboratory tests. Normal vaginal flora does not cause abnormalities when the body’s resistance is good, but when the body’s resistance is poor, immunity is reduced, contact with unclean toilet paper, or menstrual sanitary napkins are not qualified and not replaced in time, as well as swimming in substandard water, improper use of antibiotics, etc., can cause dysbiosis of the vaginal flora and lead to mycobacterial infection. During pregnancy, women’s body secretion of estrogen and progesterone increases, causing increased leucorrhea. If they do not pay attention to wash their pubic area frequently, the vagina and vulva are stimulated by humidity for a long time, and the high sugar content in the vagina of pregnant women during pregnancy changes the vaginal environment and causes a decrease in immunity, which can easily lead to mycosis fungoides.