Full-month baby sleep is always frightened, commonly found in the following situations: 1, vitamin D deficiency rickets, most often born in the fall and winter, after birth did not give supplemental vitamin D on time, or the mother in the second trimester of pregnancy has calcium deficiency performance of the baby, often accompanied by easy to frighten, crying, occipital baldness, excessive sweating, etc., after giving supplemental vitamin D and moderate outdoor activities, will gradually improve. 2, brain injury syndrome, baby Easily stimulated by sound and other stimuli, excessive fright, manifested by involuntary upward extension of both upper limbs in the form of embracing, and the presence of high-risk factors before, during or after birth, such as prematurity, hyperbilirubinemia, hypoxic-ischemic encephalopathy, low birth weight babies, and so on. If there are any of the above manifestations and medical history, it is important to visit the pediatric rehabilitation department to give the necessary early intervention.