Abstract:Rats, mice, pigeons and rabbits were employed to study the anti-inflammatory and toxic actions of Radix Aconiti Coreni and Rhizoma Tyhon. The result shows that Radix Aconiti Coreni and Rhizoma Tyhon have similar anti-inflammatory action. Rhizoma Tyhon has an obvious stimulating effect on eye conjunctiva as well as throat and stomachic mucosa, while Radix Aconiti coreni does not.