A one-year-old baby hitting his own head if it is pleasant is generally normal, if the baby hitting his head symptoms are getting worse or accompanied by crying and so on may be abnormal. If the baby is in a more pleasant mood to hit the head, no painful expression, the baby may be playing, seeking fresh stimulation. No special treatment is needed at this time, and the baby will gradually improve as it grows older. If a one-year-old baby is always hitting his head, or if the baby has a painful expression when hitting his head, it usually means that the baby hitting his head is not normal, which may be due to headache, otitis media, or suffering from seborrheic dermatitis of the head and other conditions. If the symptoms of a one-year-old baby hitting his own head are serious or continue to not get better, it is recommended to go to the hospital in time for treatment.