The fever of children who have been vaccinated with DPT may be caused by the reaction after vaccination, or infectious fever. At this time, the fever may be due to the vaccination, the body’s immune response to antigen, this fever is usually short-lived, the duration of 3 days or less, at the same time, the baby’s mental response is good, the dynamic monitoring of temperature, to be the physical cooling, if necessary, can follow the doctor’s instructions to oral antipyretic drugs, such as ibuprofen. It is also possible that the baby at the same time there are other infections, vaccination happens to trigger or aggravate the condition, this time need to consult the doctor, improve the blood test, if there is a bacterial infection, can be under the guidance of the doctor oral antibiotics such as amoxicillin. Children with fever with DTP may also have other causes, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment, the above medication to comply with the doctor’s instructions.