Objective:To establish the characteristic parameters of normal pulse,slippery pulse and taut pulse and the reference range of normal medical indicators based on single pulse graphs. Methods447 pulse graphs of non-disease population were studied,among which 171 cases were pulse graphs of normal pulse,118 cases were pulse graphs of slippery pulse,and 158 cases were pulse graphs of taut pulse. The characteristic parameters of pulse graphs such as amplitude and chronaxie were analyzed. The characteristic parameter indexes and distribution range of normal pulse,slippery pulse and taut pulse were discussed.  Results:Comparison of any two kinds of pulse,the differences on the ratio of h,1, and t,1,h,3, and h,1,h,4, and h,1, were statistically significant(P,<,0.01). Comparison between normal pulse and slippery pulse,the difference on the ratio of w and t was not statistically significant(P,>,0.05). Comparison between normal pulse and taut pulse or taut pulse and slippery pulse,the differences on the ratio of w and t was statistically significant(P,<,0.01). By measuring the index range of characteristic parameters of pulse graphs,the reference range of normal medical indexes of characteristic parameters in the three types of pulse were established simultaneously.  Conclusion: The criteria for pulse graphs differentiation of normal pulse,slippery pulse and taut pulse can be established based on h,3,/h,1,h,4,/h,1,w/t and pulse shape as the core index parameters.