Three months old baby’s hands and feet sweating also cool ice, because sweating takes away more heat, resulting in local skin cold situation, this situation mainly consider the following aspects of the possibility: First, may be the baby is a cold, respiratory virus or intestinal virus infection caused by the cold, usually can cause the child to appear sweating discomfort. Second, pay attention to the baby may have gastrointestinal disorders, such as poor digestion and other various reasons caused by intestinal cramps, abdominal discomfort, but the age is too small children will not describe. Third, pay attention to the child may have a hypoglycemic reaction, seen in the case of reduced food, hunger is easy to appear. Fourth, if this often occurs, pay attention to whether the child has vitamin D deficiency, rickets and calcium deficiency, also pay attention to whether the micronutrient deficiency, zinc deficiency, iron deficiency, causing poor digestion and absorption function, weakness, causing sweating.