Abstract:Plarmacological studies were conducted on Uncaria sinensis and Achyranthes bidenttata both separately andcombined.Comparison was made on the hypotensive effect on normal and renal-type hypertensive rats as well anti-st1asmodiC and sedative effect;in mice。The resuIts showed that Uncaria sinensis and Achyranthes bidentata have obvious synergic action in compatibility.