Abstract:Saponins of panax notoginseng is a mainly effective ingredient in the plant sanqi, which contains different kinds of monomer saponins. Sanqi belongs to the ginseng family. With the general application of sanqi in clinical, its function that improves the ischemia microenvironment has drew the attentions of researchers in recent years. This article summarizes the notoginsenoside efficacy in regulating blood vessels, protecting the vascular endothelial cells, eliminating edema, inhibiting oxidative stress, inhibiting apoptosis, affecting blood rheology and regulating immune function, etc, provides bases and new ideas for the researches of notoginsenoside improves abnormal microenvironment under experiment.