7 months baby cough with phlegm, is the manifestation of respiratory tract infection, common in viral infection, bacterial infection, mycoplasma infection, etc., common diseases for bronchitis, bronchopneumonia and so on. 1, general treatment: baby feeding warm boiled water, change position, pay attention to rest, pay attention to back patting phlegm, no longer new increase in complementary foods. 2, control infection treatment: children coughing with sputum, need hospitalization, auscultation of both lungs, when necessary, chest X-ray examination. Bronchitis, the pathogen is mostly viral, generally do not need to apply antibiotics, when combined with bacterial or mycoplasma infection, the need to apply antibiotics, commonly used drugs such as cefixime particles, cefaclor particles, azithromycin particles and so on (specific medication, in order to see the doctor for medication shall prevail). 3, cough and phlegm treatment: children with cough and phlegm, need to stop cough and phlegm and other symptomatic treatment, commonly used drugs can choose Ambroxol oral solution, Ambroxol oral solution, Lung Li-Cough Compound, Kratom Bei Compound, Pediatric Cough and Phlegm Granules, Pediatric Bupleurum Cough Syrup, and so on, you can choose to combine or a single medication. 4, nebulized inhalation treatment: can assist in relieving the condition, conducive to recovery, play a role in relieving cough and asthma. Inhaled budesonide, together with terbutaline, or salbutamol can be chosen. 5, other: suspected the existence of allergic cough, allergic body may consider with anti-allergic treatment. Baby cough phlegm, medication at the same time, pay attention to observe the cough, sputum changes, regular hospital follow-up, according to changes in the condition, timely adjustment of medication.