The phlegm sound in baby’s throat when eating milk is mostly considered to be caused by congenital laryngeal cartilage underdevelopment, uncoordinated swallowing function and respiratory tract infection, etc. You need to go to the hospital for examination and treatment after clarifying the cause. Common causes and treatment I. Physiological factors: Due to the imperfect development of the pharyngeal nerve and muscles such as the tongue and throat muscles, the swallowing function is not coordinated, which easily leads to phlegm and choking and coughing when the baby eats milk. It is recommended to go to the hospital for oral muscle assessment in time, and acupuncture, oral muscle massage and other treatments can be given under the guidance of the doctor. Second, disease factors: 1, congenital laryngeal wheezing: the cause is unknown, may be due to malnutrition during pregnancy, vitamin D and calcium supplementation too little caused by the fetus lack of vitamin D and calcium, resulting in the baby’s laryngeal cartilage dysplasia, appearing when eating milk with phlegm sound in the throat. It is recommended to supplement vitamin D and calcium in appropriate amount under the guidance of doctors, and the symptoms will gradually improve with age. 2. Respiratory tract infection: such as bronchitis, cold, etc., can cause phlegm sound in throat, accompanied by coughing and coughing. It is necessary to improve the blood routine, sputum smear, sputum culture, X-ray and other examinations to clarify the type of pathogenic bacteria, and follow medical advice to anti-infection treatment, using penicillin, erythromycin and other drugs, and at the same time need to actively symptomatic treatment, such as oral bromhexine, ambroxol to expectorant, cough suppression. If there is phlegm sound in the baby’s throat when feeding, control the amount of milk each time, and do not let the baby lie down immediately after drinking.