Small bumps on the back of the tongue may be normal anatomical structures such as contour papillae or lingual tonsils. 1. Contour papillae: When you stretch your tongue, you will see small bumps at the very back of your tongue that are neatly aligned and are called contour papillae. The contour papilla is one of the four types of papillae on the back of the tongue, where these four types of papillae include the contour papilla, the lobular papilla, the fungus papilla, and the filiform papilla. The contour papilla is the largest papilla and is distributed at the junction of the anterior two-thirds of the tongue and the posterior one-third of the tongue. 2. The bumps on the back of the tongue and the lingual tonsils, which are irregular, unevenly distributed and irregular, are normal anatomical structures. When the inflammation of the pharynx and the inflammation of the tonsils recurs, there can be repeated enlargement of the lingual tonsils, and then you can’t see the irregularly arranged bumps. When small bumps appear on the back of the patient’s tongue, prompt medical attention is needed to clarify the cause and determine if treatment is needed.