The long filiform flesh under the tongue is considered to be a normal physiological structure, local mucosal hyperplasia or the appearance of warts, which need to be examined in the hospital. 1. Normal physiological structure. Normal bottom of the tongue tongue tie on both sides of the sublingual caruncle, into a soft small ball protrusion, no redness, swelling, no pain when pressed. It is a normal physiologic structure. 2. Localized mucosal hyperplasia. If the floor of the mouth is subjected to long-term adverse stimuli, there can be abnormal proliferation of the oral mucosa, for the sudden appearance of polyps, no pain on pressure, clinical examination can be found to have the presence of bad restorations or bad oral habits, for a certain period of time, the sudden appearance of the symptoms. 3. Warts. Organisms infected with HPV can appear in the floor of the mouth single or multiple small nodules, papillary redundancy, can gradually increase in size or increase, and the mucous membrane border is clear. The long filiform flesh under the tongue is recommended to go to the hospital for examination, and find the problem timely treatment.