Objective: To study clinical significance of endogenous vitamin C 、 E in patients With hypertension and stroke. Methods: The serum vitamin C、 E, Malondialdehyde (MDA), superoxide dismutase (SOD) were determined by ultraviolet spectrophotometry in patients with hypertension (23 cases)、 hypertensive cerebral hemorrhage (CH, 30 cases)、 ischemic cerebrovascular disorders (IC, 25 cases) and control groups (20 cases). Results: Compared with control group, at acute stage of stroke, the Vit C、 E and SOD levels significantly reduced (P＜0. 01), the MDA level significantly increased (P＜0.01); at convalescent stage, the Vit C、 E gradually recover to normal, the SOD still reduced (P＜0.05), the MDA still incresed (P＜0.05). Conclusion: The endogenous Vit C、 E have significant change in patients with acute stage of stroke, it gradually recovers to normal in convalescent stage. Meanwhile the SOD and MDA change accordingly.