Abstract:In this paper in is reported that nine prescriptions often used in traditional Chinese medicine for the treatment of diseases with fever were tested experimentally for the effect on fever of rats induced by endotoxin. The results are as follows: Da-yuan-decoetion, Gan-lu-xiao-du-pill, Lian-pu-decoetion, Cai-hao-mixture, Da-huang-huang-lian-jie-du-decoetion. Tao-ren-cheng-qi-decoetion, Ge-gen-qin-lian-decoetion, Yin-qiao-jie-du-decoetion etc. can notably reduce fever in rats induced by endotoxin with the exception of Bai-hu-decoetion that has no obvious effect on fever-reduction.