本文报告１２８例中风患者发病时间的昼夜分布差异，发现脑血栓存在发病时间上昼夜分布差异，发病高峰时间在４：００～７：００；而脑栓塞及脑出血则缺乏此种昼夜节律性。文章对其发病机理进行讨论，指出对老年中风高发人群进行发病高峰段提前进行预防治疗，对降低脑血栓发病率有积极意义。 This paper reports 128 cases of stroke patients in the diurnal distribution of the time difference between the onset and found that the occurrence of cerebral thrombosis in the diurnal distribution of the time difference between the peak incidence of 4:00 ~ 7:00; and cerebral embolism and cerebral hemorrhage is the lack of such circadian rhythms. This article discusses its pathogenesis, and points out that it is of positive significance to reduce the incidence of cerebral thrombosis by prophylactically treating the elderly patients with high incidence of stroke in advance.