This paper reports the effect of electroacupuncture (EA) on peripheral microcirculation in 12 acute experimental arthritic rats and 6 healthy rats. The results showed that after EA an obvious improvement in footback-microcirculation of acute experimental arthritic rats appeared, namely, the disturbance of microcirculation on the area of pathological changes was alleviated. The auricular microcirculation was strengthened as well. There were no obvious changes of peripheral microcirculation in healthy rats after EA. That indicates EA has therapeutic effects of promoting blood circulation and reducing extravasated blood, antiphlogosis and detumescence on the area of pathological changes in acute experimental arthritic rat.