Babies suddenly cry like they are frightened, usually due to the presence of psychological needs, physical needs or disease states. Parents need to carefully observe other aspects of the child’s condition to determine what causes it, and go to the hospital for physical examination if necessary. Common causes and treatment 1. Psychological needs: The baby’s nervous system is not fully developed, and often there is no sense of security, separation anxiety, etc. Sudden crying may be to attract parents’ attention and seek care and companionship. Parents should pick up the baby and soothe him/her in time, and the crying will stop when the baby is emotionally stable. 2. Physical needs: Babies cannot express their needs through words, and sudden crying may occur if they feel hungry, have the urge to urinate or poo, have thick clothing or bedding, have a high or low room temperature, or have wet diapers that are not changed in time. If the baby is hungry, has the urge to pee or poop, has thick clothing or bedding, has a low room temperature, or has a wet diaper that is not changed in time, the baby will suddenly cry. Parents should be careful in the daily care, timely and appropriate feeding, clothing adjustment, diaper change, etc.; 3, disease caused by: suffering from upper respiratory tract infection, digestive system diseases, skin diseases, etc., may cause the baby’s body discomfort, appear crying situation, usually have the corresponding symptoms, such as respiratory tract infection can appear temperature fever, cough, nasal congestion, etc.. Disorders of the digestive system may include loss of appetite, vomiting, etc. If the crying cannot be relieved for a long time, it is necessary to seek medical attention in time to determine the cause and carry out targeted treatment under the guidance of a doctor. Parents should give more care and companionship to their babies in daily life, take their temperature regularly and observe whether there are any uncomfortable symptoms. Pay attention to feeding light and easily digestible food to avoid indigestion.