Baby cold hands may be caused by environmental factors, fever, loss of body fluids and other reasons. 1. Environmental influences: the infant thermoregulatory center is not yet well developed, and the ability to regulate body temperature is low. When the temperature environment is low, it is easy to lead to the phenomenon of cold baby hands. 2. Fever: due to sympathetic excitation caused by skin vasoconstriction, superficial blood flow reduction, in the period of rising body temperature can appear skin pale, cold and other phenomena. At this time, it can cause cold hands, and then it can gradually turn into generalized fever. 3. Loss of body fluids: If the loss of body fluids is large, it will cause a reduction in circulating blood volume, blood supply priority to the heart, brain and other important organs, the peripheral blood supply of the limbs is less, the phenomenon of cold hands can occur. The baby’s hands may be cold for other reasons, it is recommended to go to the hospital in time to improve the examination to clarify the cause of the disease, to give targeted treatment or treatment.