There are many reasons why an infant’s forehead can be cold, such as physiologic factors, environmental factors, and colds and fevers. 1. Physiological factors: infant metabolism is faster, so sweating will be more, due to the evaporation of heat through the sweat, can be caused by the phenomenon of infant forehead cool. 2. Environmental factors: baby forehead cool may be due to the weather is too cold, forehead is belong to the exposed skin, so there will be baby forehead cool phenomenon, but the baby body temperature is normal. 3. Colds and fevers: Colds and fevers can lead to cold foreheads, but the body is in a feverish state. There are many other reasons why a baby’s forehead is cool, if accompanied by uncomfortable symptoms, it is recommended that the patient consult a doctor in a timely manner to improve the examination, take standardized treatment as prescribed by the doctor, and do not ignore the symptoms, so as not to delay the condition.