6 months baby 38 ℃ is considered fever, belong to the state of low fever. Thermometer used in different parts of the measurement out of the normal value is different, the normal range of anal temperature is 36.5 ~ 37.7 ℃, the normal range of axillary temperature is 36 ~ 37 ℃, the normal range of mouth temperature is 36.3 ~ 37.2 ℃, 6 months the baby temperature in 38 ℃ is belong to the state of fever. According to the temperature of the fever, the clinical fever is divided into four levels, low fever is 37.3-38 ℃, moderate fever is 38.1-39 ℃, high fever is 39.1-41 ℃, 41 ℃ or more is ultra-high fever. 6 months baby 38 ℃ belongs to the state of low fever, has not exceeded the moderate fever. 6 months baby fever 38 ℃ can be the first physical cooling, let the baby drink more warm water, the use of antipyretic patches, warm water bath to reduce body temperature, body temperature in 38.5 ℃ or more and have a sense of discomfort, you need to take medication to cool down, such as acetaminophen or ibuprofen and so on. Babies with fever should always observe the temperature changes, accompanied by other symptoms of discomfort to seek medical attention.