You can judge whether the infant is tongue-tied from the following aspects: inaccurate tongue tip shape, tongue tie, affecting breastfeeding, and ulceration of the articulation band. 1. The shape of the tongue tip: when a month-old infant understands the parents’ words, the tip of the tongue is W-shaped when the infant extends the tongue forward, and the tongue is not able to reach the upper teeth when it is cocked and is V-shaped. Smaller infants can be found with a V-shaped tongue when they cry. 2. Influence on breastfeeding: under normal circumstances, babies suck milk with their tongue on the teething bed, but when the baby’s tongue tie is short, the middle of the articulation is not, resulting in the teething bed directly biting the mother’s nipple or nipple, breastfeeding mothers will feel the pain in the nipple when the baby is breastfeeding. 3. Inability to pronounce words: short tongue tie does not affect the child’s ability to speak early or late, but it may have an effect on certain words, such as warbled syllables. 4. Tongue tie ulcers: Infants with erupted milk teeth at an older age often develop ulcers because the tongue tie is rubbed by the incisors during breastfeeding. Parents are reminded that infants with short tongue tie should be seen in time for observation or surgical treatment according to the symptoms to ensure the normal growth and development of infants.