Phlegm in the throat of a 7-month-old baby is most often the result of a disease, and there is no quick way to get rid of it. You need to find out the exact cause of the phlegm in your baby’s throat and treat the cause. A 7-month-old baby with phlegm in the throat may have a cold, pharyngitis or bronchitis, and the treatment will vary depending on the cause. If it is caused by cold, you can take pediatric cold and flu medicine under the guidance of the doctor; if it is caused by pharyngitis, you can take blue scutellaria oral solution under the guidance of the doctor; you can also apply aminoglutethimide hydrochloride under the guidance of the doctor and other medicines to treat phlegm treatment. There may be other reasons for the phlegm in the throat of a 7-month-old baby, so it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy.