Objective To investigate the leukocyte infiltration inside the hematoma and the correlation between this and the expression of platelet P-selectin (CD62p) and platelet thrombin-sensitive protein (TSP) of patients with cerebral hemorrhage. Methods In 33 patients with cerebral hemorrhage treated with minimally invasive surgery, the expressions of platelet CD62p and TSP were detected by flow cytometry (FCM) and leukocyte counts were measured in intracerebral hematoma fluid and venous blood. The correlation analysis was performed between the two variables.Results The expressions of platelet CD62p and TSP in hematoma fluid were higher in patients with acute cerebral hemorrhage (20.25?1.82, 37.04?3.63) than those in venous blood (7.72?2.19, 12.32?2.81)(all P