The so-called lingual tract is the tendon underneath people’s tongue. The mucosa underneath the tongue in our mouth is thin and flat and continues with the mucosa of the sublingual region when it is reflexed, forming a tongue ligament in the middle of the tongue, which is often referred to as the lingual tendon. In general, the development of the tongue tie in children is mostly normal. In some children, the anterior tongue tie is found to be taut and pulled during infancy, which is a temporary physiological phenomenon and not a true short tongue tie. With age and the eruption of the milk teeth, the tongue tie will gradually loosen and the tongue will become more mobile. Some people have a short tongue tie, which is just that: a short tongue tie. A short tongue tie is often manifested by the tongue not being able to reach forward freely, as shown by the tongue not being able to touch the upper lip when sticking out, the tongue not being able to reach the palate when inside the mouth, the tongue sticking out in an M-shape, or the tongue sticking out with a small groove, which can affect pronunciation.