The absorption time of a brain hemorrhage clot needs to be evaluated comprehensively according to its bleeding volume and bleeding site. If the patient bleeds in a small amount, at a non-critical site, the absorption will be faster, the symptoms will be milder, and the chance of leaving neurological deficits and sequelae will be relatively small. If the bleeding is at a critical site, especially a critical site of neurological function, such as the internal capsule, midbrain, pontine medulla and even spinal cord, where the nerve fibers are particularly dense, even a small amount of bleeding can cause particularly severe neurological deficits. For such patients, even if the bleeding is absorbed early, it may leave more severe neurological sequelae. The bleeding itself is relatively large and still takes some time to absorb by itself, and surgical treatment is needed to help remove the hematoma for early recovery.