Coughing after vaccination for 3~11 years old may be caused by the adverse reaction of the vaccine, or it may be caused by your own disease, the specific situation needs to consult a doctor in time. The first thing to consider when coughing after vaccination for 3~11 year olds is the adverse reaction to the vaccine. As children’s own immunity is weak, the probability of adverse reactions after vaccination is higher. If the cough occurs immediately after the vaccination, the main consideration is the rejection reaction caused by the vaccine, resulting in the occurrence of symptoms. However, it cannot be excluded that the cough is caused by the disease itself, such as upper respiratory tract infection, pneumonia, etc., which are also common diseases that can cause cough in children. Therefore, it is necessary to consult a doctor in time for blood tests and chest X-rays to determine whether there is any disease and to treat the disease under the doctor’s guidance.