A baby with phlegm in the throat will have a purring sound. This condition is mostly caused by inflammatory irritation, which leads to increased airway secretions. For such a child it is possible to eat eggs, but care needs to be taken in the diet, if the child is allergic to eggs, they should not eat them. If the child is not allergic, he or she can eat a normal diet, but should not eat foods that are too sweet or salty. These foods can stimulate the child’s cough symptoms to worsen and increase secretions in the airways. You also need to be careful not to consume too much in the diet. Excessive consumption will increase the burden on the gastrointestinal tract, which may cause gastrointestinal disorders in children and increase secretions in the trachea. It is necessary to keep the humidity in the room high, give the child more water and pat the back regularly to promote the discharge of phlegm. If it is caused by inflammatory irritation, antibiotics are needed to control the infection. If it is caused by viral infection, just give your child symptomatic treatment, and you can use medicine to reduce phlegm and cough.