The reasons why newborns keep twitching include physiological factors, pathological factors such as vitamin D deficiency tetany, convulsions, and so on. 1. Physiological factors: the newborn’s nerves are not mature, the temperature, light and other stimuli may appear involuntary twitching, parents mistakenly think it is a convulsion, this general removal of triggers can disappear. 2. Vitamin D deficiency tetany: For example, if the newborn has vitamin D or calcium deficiency, there will also be convulsions, usually accompanied by clenched teeth, cyanosis, and confusion during the seizure. 3. Convulsions: If the newborn has an intracranial infection, it can also lead to convulsions, which are mainly characterized by involuntary spasmodic contraction and relaxation of the muscles alternately, and usually there is also fever. Newborns have been convulsions, there may be other reasons, it is recommended to go to the hospital in a timely manner, improve the examination to clarify the cause of the disease, under the guidance of the doctor to give targeted treatment or treatment.