Children can take medication for coughing after the new crown vaccine, but those who continue to have unrelieved symptoms need to seek timely medical attention. Adverse reactions can occur after the new crown vaccine, such as cough, fever and other symptoms, cough, if the symptoms are prominent can take cough medicine symptomatic treatment, such as pulmonary cough, such as cough symptoms are mild, can not use drugs. However, the adverse reactions caused by the vaccine are mostly transient, if the patient’s cough and other symptoms continue to fail to recover, it is necessary to go to the hospital in a timely manner, to investigate whether there is pneumonia, bronchial and other diseases, and timely treatment. If the patient’s cough is accompanied by obvious fever, coughing up pus sputum and other manifestations, it is also necessary to consult a doctor in a timely manner, and respiratory tract infections to identify, and timely treatment.