The aim of this study is to evaluate appraiser’s consistency and accuracy about pulse diagnosis(PD) in discrimination of eight-constitutions using Gage R&R study. Cumulative numbers of PDfor discrimination of eight constitutions of three appraisers’ experience were 75,000 cases, 50,000cases, 1,100 cases, respectively. Three Appraisers diagnosed subject’s eight-constitutions by PDwith blinded method. Gage R&R study was used to verify the results. Inthe measurements ofconsistency, appraiser B (agreement = 80%, Value of k = 0.8276) was very good, appraiser A (agreement =70%, Value of k = 0.7465) was good, and appraiser C (agreement = 50%, Value of k = 0.5365) was moderate.In the measurements of accuracy, appraiser B (agreement = 70%, Value of k = 0.6812) was good,appraiser A (agreement = 60%, Value of k = 0.6414) was good, and appraiser C (agreement = 0%, Value ofk = -0.1000) was poor. The results suggest that accuracy of discrimination of constitutionsrelatively depend on experience and number of cases of PD. Further large controlled study isneeded to evaluate the accuracy of PD.