Baby head fell to the ground to determine the severity of the injury by observing the mental state, vital signs, the condition of the injury, improve the imaging examination, days or weeks still need to be closely observed and monitored. 1. Mental state of mind: whether there is unconsciousness, drowsiness, coma. 2. Vital signs: whether there are breathing irregularly, pupils are not equal to the size. 3. Condition of the injury: whether there is breakage, swelling, deformity. 4. Other aspects: whether there is watery fluid coming out of the ear or nose; whether there is vomiting, limb convulsions, etc. Imaging tests such as cranial CT are also needed to rule out intracranial hemorrhage or fracture. Close observation and monitoring is still needed for several days or weeks, as delayed intracranial hemorrhage may occur. It is recommended that babies who fall on their heads on the floor seek prompt medical attention and be guided by a doctor to understand their condition and avoid delays.