After a brain contusion, hospitalization usually takes 3 weeks. This is because the patient has to go through the danger period gradually and then go home to recuperate on his own after all the danger period has passed. In general, during the acute phase of 1-3 days, the main concern is the risk of re-bleeding. Because blood vessels are ruptured after cerebral contusion injury, if the blood pressure is not well controlled, and the emotion is agitated, it is very likely to cause blood vessels to rupture again, thus causing cerebral hemorrhage, so it is very necessary to apply hemostatic drugs and actively control the blood pressure at this time. In addition, 7-10 days after the injury, this period is mainly the risk of brain swelling, is the peak of cerebral vascular and brain tissue swelling. This is because cerebral edema can bring about certain effects such as headaches, nausea, and vomiting. Therefore, it is important to actively apply relevant medications for treatment during this period, such as the drug mannitol, which eliminates cerebral edema, as well as medications that elevate vascular tone, such medications must be used. If all these conditions pass smoothly, you can usually be discharged from the hospital in 3 weeks.