Five-year-old children coughing with phlegm, first of all can take symptomatic cough and phlegm treatment, cough medicines include the lung force cough combination, compound licorice tablets, etc., phlegm drugs include Mucosolvan, eucalyptus pin, etc., and secondly, we should improve the blood routine, C-reactive protein, mycoplasma antibody, chest radiographs and other related tests to assess the causative microorganisms of the infection, and to make targeted treatment. If the patient is caused by bacterial infection, cefixime, azithromycin and other related antibiotics can be used for treatment. If the patient is due to mycoplasma, azithromycin and erythromycin, which are macrolides, may be used. If the patient is caused by viral infection, clinical only need symptomatic treatment, because the virus has self-limiting, without special treatment, usually recommended to eat more pears, can play a moisturizing lung, cough effect.