The baby has just finished the vaccine fever at night, it is possible that the vaccine reaction or a combination of other diseases (such as bronchitis) caused, should be given antipyretic symptomatic treatment, if necessary, go to the hospital in a timely manner to consult the doctor. The baby just after the vaccine fever at night, it is likely to be caused by the vaccine reaction, this situation is often in good spirits, no cough, cough sputum, diarrhea and other symptoms. If the baby’s temperature is lower than 38.5 ℃, can be given physical cooling, such as warm water wipe, drink more water; if the baby’s temperature is higher than 38.5 ℃, can be given to ibuprofen and other antipyretic drugs to symptomatic treatment, after sweating attention to replenish water. If the baby has fever after vaccination, accompanied by cough, sputum, chest tightness, diarrhea, vomiting, poor spirit and other symptoms, it may be combined with other diseases, such as bronchitis, enteritis. If the body temperature is high, ibuprofen and other antipyretic drugs can be given first to reduce fever, and promptly brought to the hospital for further examination and treatment to clarify the cause of the disease. The use of medication should be under the guidance of a doctor.