Whether the bleeding from a smashed head should be tight or not is determined by the results of the cranial CT examination. If there is no intracranial hemorrhage, no skull fracture, and the bleeding is caused by a simple scalp laceration, it does not matter and the condition is mild. Because the scalp blood supply is very rich, scalp laceration and bleeding are often more obvious. But only the surface soft tissue damage, will not affect the intracranial nerve function, so there is no big problem, can give clear suture, in about a week the scalp can be completely healed. If the cranial CT examination indicates intracranial hemorrhage, the condition is relatively serious. If it is a small amount of bleeding, conservative treatment can be given. If there is a lot of bleeding, cranial hematoma removal is also needed, and the condition is more serious.