Newborn babies always sleep with a startle may be caused by immature brain development, low blood calcium, epilepsy, through observation, calcium supplementation, medication to deal with. 1. immature brain development: the newborn’s brain function is not fully developed, for the surrounding muscle control ability is also relatively weak, sleep will have a startled performance, you can temporarily observe, with the growth of age, the brain function will be gradually developed and perfect, no longer sleep a startled performance. 2. Low blood calcium: newborns, from the mother’s calcium source suddenly interrupted, their own blood calcium level decreased, causing neuromuscular excitability increased, sleep at night will always be startled, first go to the hospital to draw blood to check whether there is hypocalcemia, under the guidance of the doctor to supplement the calcium treatment, such as calcium carbonate granules. 3. epilepsy: newborn baby sleeps always startled, accompanied by cyanosis, hands and feet regular shaking, consider epilepsy caused by convulsions, go to the hospital to do brain CT or cranial magnetism examination, to see whether there is cranial brain disease, and then targeted treatment. Newborn babies sleep always startle more causes, serious recommendations for timely medical treatment. The above medication needs to be used under the guidance of a doctor.