Baby sleep old head shaking, may be related to physiological factors, may also be due to ear eczema, vitamin D deficiency rickets and other reasons. 1. Physiological factors: due to the baby’s metabolism is more vigorous, easy to lead to the head of the phenomenon of excessive sweating, especially in the just after falling asleep soon, the head of the more sweating, by the stimulating effect of sweat, resulting in scalp itching, may be manifested in the old sleep shaking the head, by shaking the head to relieve scalp itching. 2. Ear eczema: especially allergic babies, when contact with pollen, dust mites or detergents, easy to cause eczema, when the ear eczema, can lead to the ear of the local skin more small pimples, resulting in itching of the ear, may show sleep old head shaking, as a means of relieving the symptoms of itching of the ear. 3. Vitamin D deficiency rickets: the disease can lead to increased neural excitability of the child, resulting in excessive sweating in the head, especially in the head when sleeping more sweat, there may be sleeping old shaking head phenomenon, want to relieve the itching symptoms caused by sweat stimulation by shaking the head, may also be accompanied by frequent crying at night, occipital baldness and other manifestations. Baby sleep old shaking head, may also be caused by other reasons, if accompanied by obvious symptoms of discomfort, should be taken seriously, as soon as possible to take the baby to the doctor, through the perfect relevant examination, diagnosis of triggers, to give targeted treatment.