Inclusion Criteria1. Spontaneous intracerebral hemorrhage was documented by CT scanning within 24 hours of the onset of symptoms
2. Supratentorial location of hemorrhage
3. Older than 17 yrs
Exclusion Criteria1. Planned surgical evacuation of hematoma within 24hrs
2. Secondary ICH due to trauma or aneurismal rupture or etc
3. Taking antithrombotics or other NSAIDs previously
5. Other physical condition, making the patient difficult to participate the study (decided by the neurologist or the physician).