If a child develops a cold after vaccination, he or she can take medication, but the choice should be made according to the situation. If a child’s cold is only mild with symptoms such as runny nose, sneezing and a slight cough, and the child’s mental state is still good, and his appetite for food is also good, then he only needs to drink more warm water and rest, and there is no need to take medication. If the children’s cold symptoms are very serious, especially children with high fever persists, such as temperature hovering above 39 ℃, the children’s mental state is relatively poor, muscle aches and pains all over the body, this time we should give the children timely use of ibuprofen or acetaminophen and other antipyretic drugs, to alleviate the children’s symptoms.