Manifestation: The tongue cannot be freely extended forward, and the tip of the tongue is “W”-shaped when it is forced forward; at the same time, it is difficult to lift the tip of the tongue, and there is a certain amount of dysphonia. In infancy, ulcers may occur due to frequent friction between the ligament and the incisal edge of the lower incisor during tongue extension. Timing of treatment: If lingual tethering ulcers appear or dysphonia develops, promptly seek medical examination. Treatment: Tongue ligament correction Indications for surgery: 1. The tongue ligament is too short and affects normal activities and speech. 2, the child can tolerate the discomfort and cooperate with the surgery, or under sedation and general anesthesia. Limitations of surgery: Surgery does not immediately change the child’s articulation disorder, but only creates an opportunity for improvement. After the surgery, speech exercises are still needed to improve the pronunciation.