If your child has phlegm in his throat, you should first find out what is causing it. Next, do the corresponding treatment according to the cause. Again, we should pay attention to the child’s living environment and daily diet. The cause of phlegm in children’s throat is usually due to respiratory tract infections, including upper respiratory tract infections such as pharyngitis and tonsillitis, lower respiratory tract infections such as bronchitis and pneumonia, allergic rhinitis, etc. Therefore, it is best for parents to take their children to the hospital in a timely manner, and doctors will do blood tests and throat swab culture to clarify the cause. If the bacterial or mycoplasma infection requires the use of antibiotics combined with phlegm-suppressing drugs, such as amoxicillin, cephalosporin, azithromycin and other anti-infective treatment, combined with cough-suppressing and phlegm-suppressing drugs, nebulized inhalation treatment if necessary, will generally have a better effect. If the upper respiratory tract infection caused by a viral infection generally does not require antiviral treatment, if the influenza virus can choose oseltamivir treatment. Allergic rhinitis can also cause children to have phlegm in their throat all the time. If it is allergic rhinitis, treatment such as anti-allergy and nasal rinse is needed. The root of the problem of phlegm in the throat of children can be solved only by treating the cause of the problem. In addition, the child’s living environment is also very important, to keep the room air fresh and moist, must be non-smoking. It is also important to eat a light diet, eat more green fruits and vegetables, and avoid spicy and stimulating foods. Drink more water, parents can also give children appropriate pat on the back.