If the phenomenon of painful white things touching the back of the tongue, the first thing to consider is simple oral ulcers, may also be caused by viral herpes, tongue inflammation, thrush and other diseases, need to promptly consult a clear diagnosis, according to different diseases to choose the appropriate treatment. 1, simple oral ulcers: the occurrence of simple oral ulcers is the result of a combination of factors, including trauma, mental stress, diet improper, endocrine disorders, vitamin or trace element deficiency, etc., at this time will lead to damage to the oral mucosa, followed by inflammation, the appearance of the white stuff behind the tongue encounter pain, you can follow medical advice to use dexamethasone acetate oral patch on the ulcer surface to relieve discomfort; 2, viral herpes: usually by the DNA virus of herpes simplex virus invasion of the oral mucosa caused by the oral mucosa due to viral The invasion and certain damage to the oral mucosa due to viral invasion, exudate after the formation of clusters of small blisters, like the size of a pinhead, the blister wall is thin, transparent and easy to break, so easy to form a superficial ulcer, resulting in the back of the tongue white things touch pain, usually under the guidance of doctors with compound hydrocortisone neomycin cream and other drugs for treatment; 3, tongue inflammation: Candida infection, anemia, etc., may lead to damage to the surface of the tongue mucosa, triggering tongue inflammation, may appear The white stuff on the back side of the tongue is painful to touch, usually need to remove the cause, such as candida infection, it is recommended to keep the mouth clean, daily rinse after meals, if anemia caused by the use of ferrous sulfate extended-release tablets under the guidance of a doctor to supplement iron; 4, thrush: usually fungal infection of the oral mucosa leading to a disease of the oral cavity covered with white film, inflammatory substances stimulate the oral mucosa, may lead to the white stuff on the back side of the tongue touch pain, mostly seen in children, it is generally recommended to use local antifungal drugs such as fluconazole for treatment. When the symptom of white stuff on the back of the tongue hurts, patients should relax in daily life, exercise appropriately to relieve stress, and pay attention to a light diet, do not eat spicy food, such as spicy hot pot, spicy hot, etc., eat more green leafy vegetables, fruits and other vitamin supplements.