To investigate the treatment effect of 2-selenium bridged β -cyclodextrin(2-SeCD),a GPX mimic,on the stroke of stroke-prone spontaneously hypertensive rats(SHRSP),fifty-two SHRSP of 8-week old were randomly divided into four groups A,B,C and control group D. The rats of groups A,B,C and D were given 1.0%-1.5% NaCl mass fraction as drinking fluid. After onset of stroke,groups A,B and C were given {orally} 16.05,160.5 and 1605 mg·kg -1 ·day -1 of 2-SeCD,respectively,and group D was given water for {2 weeks.} The clinical score of stroke,systolic blood pressure(SBP),survival time of rats were recorded and the histopathologic examinations of their brain and carotid artery were made after decapitation. The clinical scores of stroke after treatment with 160.5 mg·kg -1 ·day -1 (Group B) and 1605 mg·kg -1 ·day -1 (Group C) of 2-SeCD are 2.55±0.98 and 1.98±0.79,respectively,those are obviously lower than that of group D(3.41±0.83,p<0.01). The survival days in group B(10.0±8.6) and group C(14.4±7.9) are longer than that for group D(4.7±2.9,p<0.01). The electron microscope study showed that the endothelium of carotid artery was near to normal in group B and group C,while it was seriously injured in control group D and mildly injured in group A. 2-SeCD may effectively be used to treat the stroke for SHRSP. To investigate the treatment effect of 2-selenium bridged β -cyclodextrin (2-SeCD), a GPX mimic, on the stroke of stroke-spontaneously hypertensive rats (SHRSP), fifty-two SHRSP of 8-week old were randomly divided into four groups A, B, C and control group D. The rats of groups A, B, C and D were given 1.0% -1.5% NaCl mass fraction as drinking fluid. After onset of stroke, groups A, B and C were given o {orally } 16.05, 160.5 and 1605 mg kg "1 day -1 of 2-SeCD, respectively, and group D was given water for {2 weeks. } The clinical score of stroke, systolic blood pressure (SBP), survival time of rats were recorded and the histopathologic examinations of their brain and carotid artery were made after decapitation. The clinical scores of stroke after treatment with 160.5 mg · kg -1 · day -1 (Group B) (Group C) of 2-SeCD are 2.55 ± 0.98 and 1.98 ± 0.79, respectively, those are obviously lower than that of group D (3.41 ± 0.83, p <0.01). The survival days in group B (10.0 ± 8.6) and group C (14.4 ± 7.9) were longer than that for group D (4.7 ± 2.9, p <0.01). The electron microscope study showed that the endothelium of carotid artery was near to normal in group B and group C, while it was seriously injured in control group D and mildly injured in group A. 2-SeCD may effectively be used to treat the stroke for SHRSP.