Cough is a protective reflex action of human body. By coughing, the secretions and inflammatory substances in the trachea are excreted with coughing, preventing foreign bodies from entering the trachea and preventing the accumulation of bronchial secretions. There are three reasons for the baby's cough and phlegm. Parents should distinguish the causes of cough and phlegm according to the doctor's guidance, and then decide what medicine to give their baby.

1, lung heat, expectoration. This kind of cough is more common in babies with low immunity, mainly manifested as repeated cough. The use of Chinese patent medicines such as Xiaoer Feire Kechuan Oral Liquid can obviously strengthen the expectorant effect, and the antitussive effect is remarkable and lasting.

2, bronchitis, pneumonia phlegm. Children's bronchitis is usually a complication caused by virus infection such as influenza, or it may be caused by bacterial infection. At first, it was a dry cough, and the amount of sputum gradually increased, gradually turning into mucus pus and phlegm. Mainly persistent cough, lasting for many months, getting worse in the morning and evening, especially at night. In the remission stage, some traditional Chinese medicine preparations for relieving cough and asthma can be used, which can alleviate the symptoms to some extent.

3, lung dryness, expectoration. The main manifestations are repeated cough, yellow sputum, constipation, body heat or wheezing, red tongue, thin yellow or greasy fur, and insufficient body fluid. It is advisable to clear the dryness and moisten the lungs, and use Qingzao Jiufei Decoction.