Objective: To observe the expression of brain-derived neurotrophic factor(BDNF) in rats hippocampus in focal cerebral ischemia after using Buyang Huanwu Decoction(BYHWD, 补阳还五汤) and Xuefu Zhuyu Decoction(XFZYD, 血府逐瘀汤), to investigate the content of BDNF in different promoting blood circulation compatibility in different period. Methods: The rats were randomly divided into sham operation group,model group, Buqi Huoxue group, Xingqi Huoxue group, total of four groups, each 30 cases. Using focal cerebral ischemia-reperfusion injur...