If there is no inflammation or pain on the surface of the tongue, the red dots can be considered normal fungiform papillae, which are physiological anatomical structures of the body. However, if there is pain or obvious redness and swelling, it is necessary to consider the pathological phenomenon of papillitis or allergy. 1. Physiological structure: There are filiform papillae, fungiform papillae, lobular papillae and contour papillae on the surface of the tongue. Bacterial papillae are small reddish colored bumps or red dots on the surface of the tongue, which are part of the normal anatomy of the tongue. The fungiform papillae, on the other hand, will appear as small bright red protrusions, which is also a normal manifestation. 2. Pathological reasons: when the daily diet is too spicy and stimulating or short-term exposure to ingredients that may cause allergic reactions, it will stimulate the surface of the tongue to varying degrees of congestion and swelling, resulting in papillary redness and swelling. When symptoms of allergy or inflammation occur, both anti-allergy treatment with drugs such as loratadine, prednisone, etc., as well as a light diet to improve the oral environment can be used. When there are red dots on the surface of the tongue, you can go to the hospital for professional consultation, under the guidance of the doctor for treatment and relief, the use of drugs need to follow the doctor’s instructions.