Short tongue tie in infants is a congenital condition that is commonly manifested by a short-looking tongue tie underneath the tongue. As a result, the child cannot extend the tongue, and the tongue sticks out in an M-shape, with the tip of the tongue clearly pulling on the middle of the tongue. This condition may lead to slurred speech in children. If the short tongue tie is more severe, surgery is usually recommended. If this is the case, we recommend that the lingual ligament be surgically treated as soon as possible after the discovery of the lingual ligament ulcer, usually around the age of 1 year. However, if this is not the case, it is now recommended that surgery of the lingual ligament be performed after the age of 4 years. This is because the speech center is not fully developed until about 4 years of age, and the tongue tie itself has a tendency to move backwards, so 4 years of age is a relatively stable time to look at the tongue tie and have surgery.