Coughing after vaccination is usually due to irritation or allergy, and is treated differently depending on the cause. Irritant cough does not require special treatment, while allergic cough requires medical attention. 1. Irritant cough: some children may cry because of the pain produced by the vaccination, and then produce an overreaction, such as violent cough, etc. At this time, parents can calm the child’s emotions, and observation is the main focus, no special treatment is needed. 2. Allergic cough: new crown vaccination, some people may produce fever, cough and other vaccine reactions, is a normal phenomenon, as long as the cough is not aggravated, and in 24 hours or so have improved, then do not need to be treated. If the cough does not worsen and improves within 24 hours or so, no treatment is needed. On the other hand, if the situation worsens or does not improve for many days, then medical treatment is needed. After vaccination, it is important to let your child rest more and pay close attention to the vaccine reaction of your child. If the adverse reaction, including coughing, worsens after vaccination, you should take your child to the hospital in a timely manner to identify the cause of the disease under the guidance of the doctor, and actively treat the cause of the disease.