The specific treatment for a 1-year-old baby’s old cough is as follows: 1. If the cough is present, but the child’s symptoms are not very heavy, oral cough medicines can be given at home, commonly used are pulmonary cough combination, or amiloride oral solution. Give your child plenty of water to help the cough improve. Do not take fish, shrimp, eggs, beef, mutton and other hairy items orally, as they can aggravate the cough. 2. If the cough is severe, take your child to the hospital for a detailed examination to clarify the cause of the cough, whether it is caused by pathogenic infection or by allergic factors. If the pathogenic infection is viral, bacterial or mycoplasma, the child should be given symptomatic medication according to the results of specific tests. If the cough is caused by allergic factors, oral anti-allergy medication is required. The cough of a 1-year-old child usually does not cough up the phlegm, so if necessary, nebulized inhalation can be used to help absorb the phlegm and shorten the course of the disease.