The 12-year-old child is always uttering is considered to be caused by environmental factors, may also be the emergence of indigestion, rhinitis and other diseases. 1. environmental factors, if the child is often in a polluted environment, the throat is too dry, may lead to the throat foreign body sensation, so the symptoms of the old utterance. 2. indigestion, if the child has indigestion, food reflux, abdominal flatulence, may lead to the child’s physical discomfort, so the child will appear the symptoms of the old utterance. 3. Rhinitis, clinical rhinitis due to increased nasal secretions, runny nose, coughing and phlegm, may lead to the child always uttering. If this kind of symptom occurs frequently, you need to pay attention to it, and actively seek medical examination and treatment.