The baby’s backward tilting and jerking may be caused by physiological factors or pathological factors such as brain injury. 1. Physiological factors: babies are too young to have fully developed language function, so they can’t express their thoughts correctly and effectively, and their negative emotions can’t be released or their demands can’t be satisfied, so they will have tilting back, and they can satisfy their curiosity and demands according to the direction of the tilting back and they can be treated without any special treatment. 2. Pathological factors: If the baby has intrauterine infection, premature birth, asphyxia and hypoxia and other diseases, it may lead to brain damage, so that the baby’s brain development is backward, high muscle tone caused by backward tilting. There may also be other reasons for the baby’s backward tilting and jerking, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy.