Baby’s hand dancing may be caused by physiological phenomenon, or it may be caused by cerebral palsy. 1. Baby’s fluttering hands and feet are not necessarily abnormal. After 2 months of age, babies generally show “restless movement pattern”, that is to say, they seem to be fluttering their hands and feet, etc. However, normal babies’ fluttering hands and feet are symmetrical and smooth. However, a normal baby’s hand-waving is a symmetrical, smooth and graceful pattern. 2. Cerebral palsy is mainly characterized by centralized movement disorders and postural abnormalities. If the baby is not symmetrically restless, but waving and moving in a stagnant, stereotyped, rigid pattern, it suggests that there is an abnormality. Whole body movement quality assessment can help to detect children with early cerebral palsy, but there are limitations, and a single test abnormality is not indicative of the problem, and other tests need to be supplemented. If your baby has any of the abnormalities described above, it is recommended that he or she be evaluated by a pediatric neurologist as soon as possible, and that an MRI or other tests be performed if necessary.