The baby was scared may show symptoms such as crying, irritability, sleep difficulties, heart rate breathing increased. 1. crying: the baby’s nervous system is not fully developed, when frightened by sound and images and other external factors, there will be more than crying, then parents need to be appropriate to pacify, usually can be quickly relieved. 2. irritability and mental depression: after being frightened, babies will show signs of loss of spirit, poor appetite and lack of playfulness, and some babies may show signs of irritability. 3. sleep difficulty: after being frightened, babies cannot easily go to sleep due to sympathetic excitation. 4. rapid heart rate and respiration: after being frightened, babies will be excited by the sympathetic nerves, and their respiration and heart rate will obviously increase. After the baby was frightened, parents need to pay attention to observation, appropriate appeasement, if the baby crying and irritable can not be pacified, it is recommended that timely child health department consultation, in accordance with medical advice to be targeted treatment.