Babies always hit the head may be due to habitual action, head eczema or neurological disorders and so on. 1. Habitual action: some parents like to stroke the baby’s head, the baby may appear to imitate the situation, but the baby is not good at grasping the strength, resulting in the situation of patting the head. With the passage of time, the baby will gradually form the habit of patting the head. 2. head eczema: head eczema will cause the baby head rash, causing itchy skin symptoms, ulceration will also cause skin pain. When the baby head skin discomfort, because the baby will not scratch, may cause the baby pat the head, relieve the discomfort of the situation. 3. Neurological disorders: some babies beat their heads because of intracranial pain, because the baby can not accurately express the discomfort, can only be expressed through the way to beat the head. If the baby suffers from encephalitis, increased intracranial pressure can cause intracranial pain. If the baby has a long-term situation of patting his head and is accompanied by symptoms such as mental instability, he should go to the hospital for examination and treatment in a timely manner.