After the baby fell down generally can be based on the physical and mental state to determine the baby’s situation. 1. Physical state: the general baby will cry loudly after the fall, should be timely to calm the baby, and then carefully observe the baby’s body and head with or without bruises and bags and so on, and at the same time with the hands of the baby’s limbs gently pinch to observe the body’s response. If the head bag is small or the body has a slight bruise, gently pinch the limbs can be free to move, and crying sound did not increase, generally indicates that the fall is not serious, can be observed. 2. Mental state: If the baby’s head is too big after the fall, but also crying, repeated vomiting (projectile vomiting), with the nose or ear bleeding, or the emergence of confusion, depression, physical inactivity and other symptoms, that the fall is very serious. Prompt medical attention should be sought at this time. Therefore, after a fall, babies should first be checked for the above physical and mental conditions immediately, and if the situation is serious, prompt medical attention should be sought.