Children have a strong cough in the morning and do not cough much during the day because the secretions in the body, such as phlegm, accumulate in the bronchi or alveoli during the night and are not easily expelled. Therefore, a violent cough occurs early in the morning to expel the phlegm, and anti-inflammatory drugs are needed to reduce the secretion of phlegm. In the case of viral infections, the sputum is often white and thin and needs to be treated with antiviral medication, such as pediatric lung fever granules. If the infection is bacterial, there is often an increase in white blood cells or yellow sputum, and oral antibiotics such as cefixime or cefadroxil, and amoxicillin are needed for treatment. If there are allergies to the above drugs, you can switch to azithromycin. Another cause may be inflammation caused by mycoplasma infection, which requires the use of macrolide antibiotics, such as roxithromycin.