Red bumps on the tongue, there are papillitis of the tongue, tongue polyps or mucus cysts and other diseases may be. 1. Tongue papillitis: There are some papillae scattered on the back of the tongue, which are mainly for taste sensation. When oral hygiene is not good, they are easy to be enlarged and inflamed, which are manifested as reddish punctate hyperplasia, among which the lobed papillae on the lateral edge of the root of the tongue and the outline papillae on the back of the tongue are usually larger, which are accompanied by pain and other discomforts in serious cases. It is recommended to maintain oral hygiene, use chlorhexidine or salt water gargle. 2. Tongue polyps: the back of the tongue can be stimulated by viruses or foreign objects, resulting in mucosal hyperplasia, manifested as a lump-like swelling, surgical excision can be. 3 . Mucous cysts: due to trauma and other reasons lead to the rupture of the salivary gland ducts of the tongue, manifested in the tongue as a semicircular bulge, requiring surgical excision. It is recommended to go to the regular hospital stomatology consultation, by the physician examination based on the symptoms of a clear diagnosis and treatment of the cause.