Baby 37.4℃ is not considered a fever, it is within the normal temperature range, if it is more than 37.5℃ consider having a fever. Babies with other symptoms, such as nasal congestion, runny nose and cough, need to closely observe the change of body temperature. If it exceeds 37.5℃, physical cooling can be taken, and if it exceeds 38℃, oral antipyretic medication can be taken to treat the fever. If it is lower than 37.5℃, no special treatment is needed, usually pay attention to keep warm and avoid getting cold. If you have other symptoms, it is recommended to go to the hospital for medical checkups and, if necessary, to improve the relevant tests, such as chest X-ray, blood tests, liver and kidney function, and tests for respiratory pathogens, etc.