A white thing on the tongue accompanied by painful symptoms, mostly due to oral ulcers, tongue papillitis, thrush and other diseases, it is recommended that patients can visit the hospital stomatology department and take appropriate treatment in a timely manner. Common causes and treatment measures mainly include the following: 1, oral ulcers: mostly due to oral mucosa damage, bacterial and viral infections, sex hormone disorders, over-eating spicy and irritating food, lack of vitamins or trace elements, etc., can often form round or oval ulcers, the center is white or yellow, the surface is slightly concave, surrounded by a red halo, pain is obvious, can affect eating and speaking. It is recommended that the appropriate application of drugs under the guidance of a doctor for treatment, such as lidocaine or benzocaine gel and spray and other pain medication, cidiodine tablets, ciproclonium chloride and other tablets, as well as vitamin drugs, is conducive to relieving pain and promote ulcer healing; 2, tongue papillitis: mostly seen in fungal infection resulting in tongue papillitis, some patients can appear white on the tongue with pain, usually accompanied by tongue papilla atrophy, tongue The patient is usually accompanied by atrophy of the tongue papillae with pain, congestion, redness and swelling, and abnormal taste sensation. If the above symptoms exist, it is recommended that patients seek medical attention and apply antifungal drugs such as itraconazole and triclomycin for treatment, while maintaining oral hygiene and reducing the consumption of irritating foods to help early healing; 3, thrush: most often seen in newborns and infants, usually due to infection of the birth canal or contamination of the nipple and breastfeeding utensils, resulting in the emergence of Candida albicans infection, clinical manifestations of the oral mucosa with a white overlay that is not easy to erase The clinical manifestation is a white coating on the oral mucosa that cannot be easily erased, accompanied by pain, crying and refusal to eat in severe cases. It is possible to take antifungal treatment under the guidance of a doctor and maintain good hygiene habits to facilitate recovery.