A fever of 38.5°C in an 11-month-old baby is considered moderate, and this temperature can be handled according to the baby’s state. If the baby’s state is very good, there is no cold hands and feet and other poor peripheral circulation, you can first give physical cooling to reduce fever, you can use warm water to wipe, take a hot bath, or apply fever-reducing patches, drink more warm water and so on repeatedly. If the temperature can be reduced to normal, it can be observed. If the temperature can not return to normal, you can directly choose to apply antipyretic drugs to reduce fever. The choice of antipyretic medication can be acetaminophen or ibuprofen, choose one antipyretic medication can be. Of course, after the application of antipyretic drugs within 1-2 hours, we must grasp with physical cooling, can make the baby’s temperature back to a more ideal state.