In this paper, we investigate the effect of exercise volume on learning and memory in senile dementia mice and determine the mechanism preliminarily. At first,to introduce vascular dementia clinical research and basic research at home and abroad, and to analyze the relationship between exercise and vascular dementia, in order to show that the research significance. Experimental effects of exercise volume on learning and memory, free radical of brain, morphology in hippocampus slices, microcirculation of mic...