Children should not blindly cut the length of the tongue strap. The so-called tongue band should be diagnosed by a doctor, which is also commonly known as tongue tendon. The sublingual mucosa is thin and flat, and it is continuous with the sublingual mucosa when folded back. At this time, there is a fascia in the middle of the back of the tongue to connect the tongue with the sublingual mucosa, which is the lingual frenum. Tongue with a short belt will affect pronunciation, which often shows that the tongue can't stretch forward freely, can't touch the upper lip after stretching out, can't reach the upper palate in the mouth, and has an M-shape or a small groove after stretching out. However, whether the lingual frenulum is too short must be diagnosed by a regular dentist. Can the pronunciation be accurate after the operation? Patients with short lingual frenulum may not pronounce correctly after operation, but some patients are still unclear after operation, which has a great relationship with postoperative training. As far as surgery is concerned, it is best to carry out lingual frenulum surgery within 1 year old or before 6 years old. The pain of operation is very small, and children under 1 year old do not need anesthesia during operation; Children aged 3~6 years can be anesthetized outside the lingual frenulum during operation. Keep your mouth clean and rinse your mouth frequently after operation. It usually takes a week to remove the stitches. Cutting the tongue strap will hurt the child. The development of lingual frenulum in children is mostly normal. Some children are in a state of tension and tightness in the front of the lingual frenum in infancy, which is only a temporary physiological phenomenon. With the growth of age and the eruption of deciduous teeth, the lingual frenulum will gradually relax and the tongue's mobility will become more flexible. Tongue frenectomy is a corrective operation for those who have difficulty pronouncing because of abnormal tongue structure. For parents who want their children to be successful all their lives, it is no good to cut off their children's tongue straps, both physically and psychologically. In particular, the psychological impact of surgery on children is greater than the physical harm. There are many reasons for incorrect pronunciation: 1. Congenital physical defects, such as congenital cleft lip and palate, missing or deformed teeth, short tongue band, etc. 2. Acquired diseases, such as the damage to the advanced nervous system caused by childhood illness; Or the language and motor areas of the brain are damaged due to head trauma; Because of hearing impairment and other conditions, pronunciation is not accurate, so it can not be imitated correctly, resulting in inaccurate pronunciation. 3. The influence of language environment will also cause children's pronunciation to be inaccurate. For example, if a child has been listening to dialects since birth, it is certainly not allowed to learn Mandarin. Adults around children speak nonstandard Mandarin, which will also affect children's pronunciation.