Thick and white tongue coating is usually seen in patients with food stagnation (stagnation of food in the stomach due to indigestion), phlegm-drinking (pathological products formed due to impaired metabolism of water and fluid), and dampness and turbidity (dampness and turbidity stagnating in the body). Treatments such as elimination of food stagnation (digestion of stagnant food), warming phlegm-drinking and drying dampness to strengthen the spleen can be administered according to the symptoms and the pulse of the tongue. Patients with a thick white tongue accompanied by abdominal distension, abdominal pain, sour and putrid taste in the mouth, loss of appetite, nausea and vomiting, and foul-smelling stools are mainly recognized as having food stagnation, and may be treated with elimination of food stagnation (to promote the digestion of food) according to the symptoms. Patients with a thick white tongue accompanied by cough, phlegm, chest tightness, loss of appetite, nausea, watery sound in the abdomen, obesity, heavy limbs and joints, dizziness, etc., are mainly identified as phlegm-drinking syndrome, and can be treated by warming yang and transforming drinking according to the symptoms (warming yang qi in the body to promote the metabolism of water and fluid). When the tongue is white and thick with bloating, loss of appetite, bland and tasteless mouth, not wanting to drink water, nausea, regurgitation, drowsiness, heaviness of the limbs, etc., it is generally recognized as a syndrome of internal obstruction of dampness, which can be treated by drying dampness and transporting the spleen, and by promoting the operation of the qi to harmonize the stomach and internal organs. If you are not feeling well, you should consult a doctor in time to avoid self-medication, which may affect your health.