Radiant heat exposure on Ciliao point was taken as radiant heat moxibustion(RHM).Whentemperature of surface of point was modulated within the range of 38-39 C and 43-44 C
the latencyof tail flick threshold(LTH)in rats was increased by 17.8±2.1% and 22.2±2.5% after 5 min.and by 16.1+2.9%
22.1±3.4% and 21.9±3.2%(50—52℃)after 10 min.respectively.LTHwas increased by 19.8±3.1% after 10 min.with needing plus moxibustion.The change of latencyafter RHM in every group and needing with moxibustion group had statistical significance(P<0.05).There was no difference of analgesic effect among all groups(P>0.05).The analgesic effect ofRHM on Ciliao point was more powerfull than Zusanli and Zhiyang(P<0.05).