Cerebral hemorrhage appears dense on CT and is characterized mainly by brightening and whitening. For the diagnosis of cerebral hemorrhage, CT is the preferred test. Because CT imaging is fast, it can better reflect the amount of bleeding and the location of the bleeding, and it can also be used to calculate the amount of bleeding, which is very important for the judgment of the disease. For postoperative patients, CT is also used as a routine reexamination. Patients who have had a cerebral hemorrhage need to be taken extremely seriously because the condition can easily change after a cerebral hemorrhage, especially within a week. Patients need to be exposed to the risks associated with rebleeding and cerebral edema. CT of the head can reflect whether rebleeding has occurred and whether cerebral edema has occurred. CT is very important for the diagnosis of cerebral hemorrhage and in the postoperative review process.