One year old baby fell to the back of the head can be judged by observing the baby’s mental condition, skin damage, and the presence of uncomfortable symptoms. It is recommended to consult a doctor in time to avoid delaying the treatment by self-judgment error. 1. Mental condition: If the baby after falling to the back of the head, the mental state is relatively poor, there is restlessness or drowsiness and other phenomena, this time the symptoms may be more serious. If the baby is in a better state and more energetic, the situation may be less serious. 2. Skin damage: if the skin breakage and swelling is not obvious, it may be relatively light; but if the swelling is obvious, or there is a breakage of bleeding, it is more serious. 3. Any uncomfortable symptoms: Observe whether the baby has dizziness, headache, nausea, vomiting, etc. If so, it may be more serious, and need timely medical treatment. It is recommended that the baby fall to the back of the head after a timely examination in the hospital, do not blindly judge on their own, so as not to have intracranial hemorrhage, or skull fracture, these are not easy to be observed, unauthorized judgment may delay treatment.