There are small bumps at the bottom of the tongue normally for the surface of the tongue bacillary papillae or contour papillae, when inflammation occurs, the papillae will be swollen, reddened and other symptoms, as follows. 1. Bacterial papillae: located at the tip of the tongue and the lateral edge of the tongue, reddish in color, with a rounded head and a thin neck protrusion, when bacterial papillitis occurs, the papillae may have symptoms such as hyperplasia, swelling, congestion, and there may be burning, pain and other discomfort. 2. Contour nipple: located in front of the boundary groove, about 8~12, in the form of a short column, when contour papillitis occurs, the nipple may have symptoms such as enlarged protrusion, clear contour, redness, etc., and the pain feeling is not obvious. There may be other reasons why there are small bumps at the bottom of the tongue, if the above symptoms occur, it is recommended to go to the hospital in time to receive regular treatment as soon as possible.