Objective : Acupuncture and Radix Astragali aqua-acupuncture stimuli have long been used to cure human diseases. However, the exact physiological and biochemical mechanisms involved remain undiscovered. Thus, many attempts have been made to show the scientific mechanisms involved. The effects of acupuncture and Radix Astragali aqua-acupuncture, which was known to date, as follow; effective circulation of body blood system and proliferation of leucocytes. Methods : In this study, we have applied acupuncture and Radix Astragali aqua-acupuncture stimuli to mouse on Sinsuhyul, a stimulative point of oriental medicine, to see effects on the expression of cytokine $IL-1{eta}$. Mice were treated with lipopolysaccharide(LPS) for inflammation induction and then reverse transcriptase-polymerase chain reaction (RT-PCR) using each primer set were performed to trace the amounts of mRNA. Results : 1. $IL-1{eta}$ was not expressed in LPS-nontreated mice at 15 to 60 min after acupuncture-stimuli. However, expression occurred after 3hrs. 2. $IL-1{eta}$ was specifically expressed in LPS-treated mice at 30 min after acupuncture-stimuli. 3. $IL-1{eta}$ was expressed in LPS-nontreated mice at 30 min after Radix Astragali aqua-acupuncture stimuli, however, not expressed at 60, 180 min. 4. $IL-1{eta}$ was gradually expressed in LPS-treated mice at 15 to 180 min after Radix Astragali aqua-acupuncture stimuli. Conclusions : $IL-1{eta}$ in LPS-treated mice was more effective than that of LPS-nontreated mice. We are now in the process of elucidating the immunological action mechanism of acupuncture and Radix Astragali aqua-acupuncture stimuli. And cytokine $IL-1{eta}$ can be used not only as a basis of the effects of acupuncture and Radix Astragali aqua-acupuncture but also as a diagnosis guide through the immunological actions of those.