Abstract:In the study of analgesic action of Radix Aconiti Lateralis Preparata and Sini Decoction hot-plate method was used and the time-effect relationship was determined. The biological halflives were 11.05h and 6.84h respectively. In the study of the effect on inflammation induced by egg white in the ankle joints of rats, the method of complement ED50 was used. The residual rates of the dosages after an interval of 6 hours were 0.60 and 0.69, and the biologicalhalflives were 8.11h and 11.35h respectively.