Children’s throat is always hmmmm how? The following reasons are common: 1, the manifestation of upper respiratory tract infection, caused by pharyngeal congestion and discomfort, mostly accompanied by nasal congestion, runny nose, fever and other symptoms, can be given to the pharyngeal detoxification rinse, ribavirin granules and other antiviral treatment, most of the week or so, cured. 2, in addition to exclude the trunk disease, the consideration of psychological behavioral anomalies. Most of the babies will involuntarily appear similar to the clearing of the throat hmmmm sound, or accompanied by squeezing eyebrows, blinking, shrugging shoulders and other abnormal behavior. Most occur in divorced families, abuse or separation from loved ones under the premise of anxiety, parents do not give too much intervention or prompting, can give care, neglect and other therapies, if necessary, can go to the hospital for examination and cognitive training.