Lingual papillitis mainly manifests as red, swollen, bleeding and painful lingual distribution of filiform papillae, fungiform papillae, contoured papillae and lobulated papillae. It can be treated for local irritants, grinding away over-sharp cusps, removing residual roots and crowns, sharpening the edges of teeth, removing calculus, removing bad restorations, taking vitamin supplements in time, and maintaining balanced nutrition. Patients with hematologic diseases such as anemia should be treated systemically, and immunomodulators should be applied if necessary. Prednisolone suspension or chlorhexidine can be used for mouth rinsing, and cephalosporin and nitroimidazole antibiotics can be applied when inflammation is obvious.