If a child has a cough after receiving the new crown vaccine, you can give the child more water, and if the symptoms are not relieved, it is recommended to consult a doctor in a timely manner. Coughing after vaccination may be a mild reaction to the vaccine. Parents are advised to give their children plenty of fluids, avoid stimulating foods, pay attention to warmth, prevent catching a cold, and keep children in a regular routine to prevent sleep deprivation. Often this condition resolves on its own and does not require additional medication. If a child’s cough persists after vaccination, does not improve after rest, or develops new symptoms, consider that the cough is brought on by other diseases, such as colds, etc., it is recommended to consult a doctor for examination, to determine what the cause is, and under the guidance of the doctor to target the use of medication, such as the use of cefixime.