The baby has a cold and a strong cough at night. The time of the night is not a particularly specific indicator, but depends on the degree of coughing and whether it is accompanied by other symptoms such as coughing up phlegm. If the cough lasts for a long time, it is likely to lead to inflammation of the bronchial tubes, and in severe cases it may lead to pneumonia. Therefore, if the cough is severe, the relevant examination can be carried out, firstly, the lungs can be auscultated, and then a chest X-ray or chest CT can be done to clarify whether there is any serious condition of pneumonia. If there is only bronchitis, you can apply symptomatic cough suppressant drugs, and if there is pneumonia, you should do the appropriate treatment. In addition, the cough is caused by specific pathogens, such as Mycoplasma pneumoniae or even Bordetella pertussis. In this case, relevant tests should be carried out to find out the pathogen, and according to the pediatrician’s judgment, sensitive antibiotics or other symptomatic drugs should be applied to the pathogen.