Short tongue tie in children is a common clinical disease, which is a congenital disease, the main manifestation of which is the relative difficulty in extending the tongue and the obvious M shape, and it will cause the child’s speech to be unclear. There are two appropriate ages for tongue lengthening surgery: 1) after the age of 1 year, when the child starts to form the habit of articulation, and the child’s articulation can be carried out in accordance with the normal articulation after the surgery. 2) It is recommended to carry out the tongue lengthening surgery after the age of 4 years old, mainly because the child’s tongue ligament will have a tendency to extend backward, and it is relatively older and more risky to carry out the surgery after the age of 4 years old. 3) after the age of 4 years old, it is recommended to carry out the surgery after the age of 4 years old. The main reason for recommending tongue tie surgery after 4 years of age is that the tongue tie tends to extend backward in children, and after 4 years of age, it is relatively older, less risky, and can achieve good clinical results.