Tofu-like discharge after intercourse is mainly suspected to be mycosis fungoides. Sexual intercourse can disrupt the microecology of the vagina and change the pH level, leading to an imbalance in the vaginal environment and triggering mycosis vaginalis. Mycosis vaginalis is a common gynecological condition caused by Candida. It is a conditionally pathogenic bacteria that normally resides in the vagina. When the systemic or local immune function of the vagina decreases, Candida attacks the body and invades the tissues surrounding the vagina, causing uncomfortable symptoms. In addition, unclean sexual intercourse and contact with infected clothing can lead to contact transmission. In addition to white bean curd or curd-like leucorrhoea, patients may also suffer from frequent and painful urination and painful intercourse. In severe cases, skin cracking and epidermal peeling can be seen, and in some cases, the leucorrhea can have a bad odor. Patients with the disease need to go to the hospital for gynecological examination, vaginal smear, fungal culture and other tests, and then the doctor will confirm the diagnosis based on the medical history, clinical symptoms and laboratory test results. Patients can be treated with topical medications such as clotrimazole, miconazole and mycobacterium preparations placed deep in the vagina under the guidance of a professional doctor; if the patient is unmarried, topical medications are not suitable and oral fluconazole can be administered. During the treatment period the patient must prohibit sexual intercourse, drink more water and eat less spicy food. The patient’s partner also often carries the germ and it is recommended to treat with medication at the same time after examination.