1, is it possible to get tongue tied? There are patients in the lingual frenulum, which makes the tongue unable to cooperate with other oral organs normally and flexibly. It will lead to inaccurate pronunciation. Under normal circumstances, the tongue strap can make the tongue move freely, and the tip of the tongue can naturally extend out of the mouth or lick the gums. However, due to the short lingual frenulum, the movement of the tongue is limited, and it is impossible to make a flat tongue sound and an upturned tongue sound.

2. Is it possible for cleft palate to appear in the mouth? Because the oral cavity and nasal cavity are connected at the back of pharynx, in the development process, it is necessary to lift the soft palate and close the passage between the oral cavity and nasal cavity with the contraction of surrounding muscles, so that the airflow swirls in the oral cavity to emit various languages, which is the velopharyngeal closure of normal people. However, patients with cleft lip and palate often have longitudinal cracks in the palate, and the palatopharyngeal cavity cannot be completely closed, which leads to air leakage, strong wind, poor sound quality, wrong pronunciation and difficulty in understanding. Generally, when patients pronounce vowels, the airflow enters the nasal cavity, causing the nasal cavity to buzz, and the vowels issued have a strong nasal sound. When consonants are emitted, the air pressure of a certain intensity cannot be formed in the oral cavity, which leads to air leakage in the nasal cavity, making the consonants weak and extremely unclear. If patients with cleft lip and palate can't get plastic surgery in time and can't speak clearly for a long time, they will have to pronounce with abnormal pronunciation methods, which will result in a cleft palate language that is more difficult to understand in adulthood.

3. Is it because of congenital hearing problems? If the baby can't hear, he can't say for sure. Only when the baby can hear and hear correctly can he imitate the pronunciation of words.

4. Is it because autism, cerebral palsy, Down syndrome and other problems involving nerve and brain development can also cause unclear pronunciation during language development?