Parents are familiar with the action of shaking their babies, but they must be careful not to shake them too hard, as it can easily cause shaken baby syndrome. According to the American Academy of Pediatrics survey data: about 20% of infants who die are due to “shaken baby syndrome”, 1/3 of them will die immediately after being shaken violently, and those who are spared will also suffer permanent brain damage. So, how can you tell if you are being shaken too much? Infant shaking syndrome occurs most often in children aged 1 to 4 years, especially in infants aged 0 to 8 months. The brain of a small infant is not yet firmly developed, and the entire head accounts for about 1/4 of the weight of the whole body, while the neck muscles are far from developed enough to provide adequate support. When adults shake the baby’s body violently, his head will rotate out of control, and under the effect of centrifugal force, the whole brain tissue will be shaken back and forth in the skull and collide with the skull, thus causing bleeding and nerve rupture. Although the baby suffers serious “internal injuries”, no obvious damage is found on the outside. Therefore, parents often overlook the danger. In the early stage, the baby will appear mental depression, drowsiness, indifferent expression, dull eyes, loss of appetite, etc. The lighter ones will be restless and tired; the heavier ones will have convulsions, slow reaction, trance, convulsions, coma phenomenon, so that after growing up, the development is delayed and mental retardation; in serious cases, the death will be due to intracranial hematoma. Therefore, if your baby has violent shaking behavior, or if your baby has the initial symptoms of shaken baby syndrome, i.e., drowsiness, loss of appetite or irritability, with convulsions, etc., you should take your baby to the hospital in time for early detection and treatment to avoid irreversible damage as soon as possible. In life to pay attention to the prevention of infant shaking syndrome, the following 5 kinds of action is very dangerous, must not do. 1, to shake violently to soothe the baby: when the baby cries, many parents will pick up the baby, while walking and shaking. However, be careful not to shake violently, shaking should be moderately gentle, the amplitude should not be too large, the speed is not too fast, if it is a younger baby, to give the head and neck a certain amount of support. 2, the baby directly to the bed: the baby will force to the mattress or sofa chair to fall down, so that it is subject to rebound force and up and down shock. Parents always think the bed is very soft, but ignore the problem of head shock. 3, the baby repeatedly thrown into the air and then catch: this game many parents love to play, but the baby’s neck is completely unsupported, repeatedly thrown into the air and then catch will lead to the baby’s head shaking violently, parents in case they miss will also fall to the ground. 4, with the baby high-speed rotation: whether in situ spinning, or sitting on a chair rotation, once the baby’s neck support is not in place, the head wobble around will be at risk of injury. 5, over-reliance on the cradle: to control the use of the cradle time and rocking strength, never use for a long time, not to mention vigorous shaking, must be gentle movements.