Children with cough with phlegm in the throat may be caused by colds, pneumonia, tuberculosis, bronchiectasis, etc. Patients can be relieved by general treatment and medication. 1. Pneumonia: For patients with cough and phlegm caused by pneumonia, they should pay attention to rest, supplement enough protein, calories and vitamins, and drink more water. If consider bacterial infection can be followed by amoxicillin clavulanate potassium, cefoperazone and other drugs anti-infection treatment. Ambroxol, acetylcysteine and other nebulized inhalation therapy; 2. Tuberculosis: patients should pay attention to rest, to eat food rich in nutrients and multi-vitamins. Isoniazid, rifampicin, pyrazinamide, ethambutol, streptomycin and other drugs can be taken as prescribed by the doctor for treatment. 3. Bronchiectasis: Patients with bronchiectasis should try to choose a half-sitting position, so that the lungs are in a high place, the drainage bronchial opening downward, and at the same time, use the hand to clap or mechanical vibration to loosen the secretion, in order to facilitate its elimination. Antibiotics, such as cefoperazone, cefixime, etc., can be taken as prescribed by the doctor, and if necessary, acetylcysteine and ambroxol can be added to nebulized inhalation therapy. It is recommended that patients strictly follow the doctor’s instructions for medication, actively cooperate with the doctor’s treatment, and try to take a light diet in life, avoid spicy, stimulating food, so as not to aggravate the symptoms.