Babies with phlegm in the throat after a cold should have symptoms of bronchial inflammation caused by viral or bacterial infection, which needs to be treated symptomatically. Most infants and young children after cold and flu, due to the respiratory mucosa is relatively fragile, easy to develop respiratory inflammation, causing mucosal edema, produce some secretions, the formation of phlegm. However, because babies have a weak response to airway inflammation and will not cough, the phlegm is usually not easily discharged. It is recommended to give the baby more water and rest. It is conducive to recovering from colds as soon as possible, which can promote the dilution of phlegm and help discharge phlegm. You can also slap the baby’s back with a hollow palm to help the baby expel phlegm. If the baby is breastfeeding, the mother’s diet should eat light, easy to digest food, minimize eating more fat and spicy stimulation easy to fire food. Eat more fresh vegetables and fruits. If the baby’s sputum is thick and yellow sputum, or accompanied by fever, bad spirits, etc., it is best to take the baby to the hospital to consult a pediatrician, let the doctor listen to the doctor, do blood tests, if necessary, do bacterial culture tests, if there is a bacterial infection need to use some sensitive antibiotic treatment. You can also choose some phlegm removing drugs for your baby under the guidance of your doctor, such as Ambroxol. In short, the baby cold, phlegm in the throat, need to according to the specific circumstances of the symptomatic treatment. So as not to cause other complications.