Before the baby fever will generally have the following manifestations: 1, fear of cold, if it is a sudden fever, the baby will have a clear fear of cold conditions, such as chills, pale, cold hands and feet, etc., which indicates that the baby is going to have a fever, and the temperature will reach more than 38 ℃, you need to closely monitor the child’s body temperature. 2, mood changes, if the child shows emotional instability, clingy, lethargy, fatigue, tiredness, loss of appetite, If the child shows emotional instability, clinginess, drowsiness, fatigue, weakness, loss of appetite, redness of the cheeks, increased respiration, etc., it may be that the child is going to have a fever, and it is recommended that parents increase or decrease the child’s clothing in time according to the seasonal and temperature changes in order to prevent colds and fevers.