For small infants, if the cough phlegm does not come up easily, the child is more painful and parents will be more anxious. At present, we recommend a few small methods that parents can try: 1. You can take oral Chinese medicine, such as pediatric Magan granules, pediatric phlegm granules, to help your baby expel phlegm through the cough and phlegm of Chinese medicine. 2. You can take oral Western medicine, such as Ambroxol oral solution, Ambrotrop oral solution, which is also effective for the baby’s phlegm. 3. You can do nebulized inhalation for your baby, and you can routinely use You can do nebulization with physiological saline and budesonide suspension. If the baby has wheezing at the same time, it is recommended to use terbutaline for nebulizer inhalation together. 4. You can pat the baby’s back diligently, parents can clasp the palm of their hands and pat the baby’s back from bottom to top to help the baby’s phlegm to be expelled. 5. You can do massage and massage for the baby in regular institutions, which is also effective for some babies to dissolve phlegm. Parents should also pay attention to the fact that babies should not eat foods that are too sweet or too salty to avoid aggravating the cough.