Phlegm in the throat of a two-month-old baby may be related to upper respiratory tract infection, which can be relieved by general treatment and medication. Upper respiratory tract infections can cause phlegm in the throat of two-month-old babies, you can let the baby drink more boiled water to promote the dilution of phlegm in the throat, but also by patting the baby’s back to help phlegm discharge. If the two-month-old’s throat phlegm situation is more serious, you can use nebulization treatment under the guidance of the doctor (such as the application of inhalation acetylcysteine solution), and if the combination of bacterial infection, you also need to add amoxicillin and other medications to cooperate with the treatment. There may be other reasons why a two-month-old baby has phlegm in his throat, and it is recommended that he go to the hospital in time to avoid delaying his condition. All of the above medications are recommended to be taken under the guidance of a doctor, and should not be used on their own.