Cough is the most common clinical condition in pediatrics. Different medications are clinically available for babies who develop a cough with phlegm. A cough with clear grayish sputum is a common symptom of chronic pharyngitis and chronic bronchitis. If the baby coughs up a lot of sputum, he or she can be treated with bromhexine hydrochloride (Bisopin), which children take twice a day, 4 to 8 mg each time. Cough with sticky sputum is a common symptom of chronic bronchitis and emphysema. Since mucousy sputum is difficult to cough up, this type of cough should be treated with a cough suppressant that has a sputum-thinning effect. The most commonly used drug is acetylcysteine (Sputum Easy). Cough with yellow pus is a common symptom of bacterial colds and tuberculosis. Cough with yellow pus sputum can be treated with a compound brown combination (compound licorice combination). Children should use it under the supervision of a doctor. In addition, most babies with cough with yellow pus sputum are combined with bacterial infections, so they should be treated with additional antibiotics such as cefradine under the guidance of a doctor. If parents cannot identify the child’s cough or if the situation is inconvenient to know, they can give the child medication such as Ertanzine to reduce phlegm and expand the bronchial smooth muscle in combination with antibiotics or antiviral medication in combination with whether the child has an infection. It is important to note that along with cough and phlegm medication, active treatment of the primary disease is required to promote early healing.