4 months baby throat grunting, common causes are as follows: 1, due to pediatric indigestion caused by abdominal distension, or due to gastroesophageal reflux and other reasons, the child will have gastric contents, after reflux to the pharynx after the retention of a situation, so there will be a grunting situation, parents should closely observe the child whether there is abdominal distension, vomiting, and defecation abnormalities such as the performance of attention to diet, pay attention to the abdomen, clockwise abdominal rubbing, and give oral medication to help gastrointestinal digestion. Give oral gastrointestinal digestive drugs, the child’s symptoms can be improved. 2, due to the baby due to upper respiratory tract infection or bronchitis, pneumonia, caused by increased respiratory secretions, thus causing the voice of a phenomenon of snoring, may also be in the early stages of pneumonia phlegm secretion, there will be a situation of snoring, this time the parents according to the state of the child, clear respiratory disease, it is best to take the baby to the hospital for a detailed examination. Take the baby to the hospital for a detailed examination, so as to give further treatment under the guidance of the physician.