Baby blowing air conditioning cold hands and feet may be a normal physiological phenomenon, but it may also be due to hypothyroidism, pediatric anemia and other diseases, it is not normal. To determine whether it is normal for a baby to have cold hands and feet when blowing on the air conditioner, it needs to be based on the actual situation and cannot be generalized. If the baby blowing air conditioning hands and feet cold because the indoor temperature is too low, so that the blood flow is reduced and caused, is a normal physiological phenomenon, do not worry too much. But if the baby blowing air conditioning cold hands and feet is caused by hypothyroidism, is not normal. Because the child’s basal metabolic rate decreased significantly, the body produces less heat, so there will be a low skin temperature, can be manifested as cold hands and feet. If it is due to anemia, is also abnormal, when the body anemia will affect vasoconstriction, reduce blood return, resulting in circulatory disorders, followed by poor peripheral circulation performance, that is, cold hands and feet. If the baby blowing air conditioning cold hands and feet excluded is a physiological phenomenon, need to go to the hospital in time to improve the relevant examination.