4-month-old baby boy fell off the bed injury should pay attention to whether there is skin damage to form wounds, fractures and joint dislocation, craniocerebral injury and other issues. 1. Skin breaks to form wounds: when falling from the bed may form skin breaks, it is recommended to use iodine povidone to disinfect, keep the local wounds dry and clean, the emergence of deeper and larger wounds need to go to the emergency department of the hospital for suturing. 2. Fractures and dislocated joints: we need to check the limb activity of 4-month-old babies. If there is obvious pain when moving the limbs or crying when pressing, we suggest that we need to carry out X-ray examination to determine whether there is any fracture or dislocation of the joints. 3. Craniocerebral injury: when the baby has consciousness disorder, coma, severe vomiting, etc., it is necessary to consult the doctor in time, through the craniocerebral CT test, to determine whether there is cranial injury. When a 4-month-old baby falls off the bed, you need to rule out the presence of the above conditions and consult the emergency department of a regular hospital if necessary.