If a baby’s head shakes during the process of breastfeeding, there are two main causes: first, physiological reasons, the baby is too young, the development of the nervous system is not perfect, and in the process of breastfeeding there will be too much force, which stimulates the nervous system, there will be the phenomenon of head shakes. Secondly, it may be caused by a lack of calcium, zinc, or other trace elements. Generally, this kind of head shaking will not simply manifest itself, so you can pay more attention to your child during the process of breastfeeding, and whether there is any head shaking at other times. If your child has head shaking at other times, you should promptly go to the hospital to check the level of trace elements, then according to the results under the guidance of the doctor for targeted supplementation, usually more sunshine, supplemental vitamin D, after treatment symptoms will gradually improve.