There are three common causes of convulsions in infants: 1, convulsions caused by febrile convulsions, children in a state of high fever due to the imperfect development of the nervous system, it is easy to appear the symptoms of convulsions caused by abnormal discharge of the cerebral cortex. The baby will have a convulsion caused by calcium deficiency because the parents did not add supplemental food and calcium supplements in time, and the baby’s demand for calcium is relatively large in the acute period of growth, and most of the convulsions will be preceded by night sweats, easy to startle, sleep, pillow baldness and other performances.