It is usually not dangerous for babies to hit their foreheads, but it is more dangerous when craniocerebral injuries are formed, so parents are advised to pay attention to it and consult a doctor as soon as possible for checkups. The forehead is a hard part of the skull, and if a baby accidentally hits the forehead, there will usually be abrasions, bruises and lumps. However, it does not jeopardize life and health, so there is no need to worry too much. In this case, it is recommended that intermittent cold compresses be applied within 72 hours and hot compresses be applied 3 days after the bump in order to get rid of the lump as soon as possible. If the external force when the baby knocked on the forehead is relatively large, it may lead to craniocerebral injuries such as scalp hemorrhage, scalp hematoma; in serious cases, there may be intracranial hemorrhage, cerebral contusion and other serious consequences of life-threatening, it is more dangerous, and you need to seek medical attention in time. After the baby hit the forehead, parents should pay close attention to the baby’s behavior, when there is blurred consciousness, nausea and vomiting and other symptoms, should immediately seek medical attention. Parents are advised not to take any chances to avoid missing the treatment.