In order to understand genetic diversity of phenotypic traits of peanut germplasm resources in high latitude and improve their comprehensive utilization efficiency,226 peanut germplasm resources were selected as test materials.19 phenotypic traits were evaluated by coefficient of variation(CV )、Shannon-weaver index(H′)、cluster analysis and so on .The results showed as follows ①The CV ranged from 2.90% to 34.07%,and the H′ranged from 1.237 to 2.077; the CV of sucrose content was the largest (34.07%),and the H′ of pod length was the largest(2.077).② The results of correlation analysis showed that 70 correlation coefficients reached significant or extremely significant level.Principal component analysis revealed that the cumulative contribution rate was 82.222% in the first 7 principal components ,it indicating that these 7 principal components represented 82.222% of the genetic information .Cluster analysis suggested that all those germplasm were divided into 3 categories, group I contained 14 materials, the central feature was the higher content of oleic acid,reducing sugar,soluble sugar,sucrose and total sugar.30 germplasms were included in groupⅡ,its major characteristic was the largest mean of 12 traits, such as number of branches with pods,height of main stem and oil conten.Group Ⅲ contained 182 germplasms, and the CV of 13 traits were the highest in all 3 groups,and contained rich germplsam type.③H′ were different in 3 germplasm types,The all H′ of landraces were smaller than lines,and the H′ of those 17 traits were smaller than breeding varieties,indicating that the genetic diversity of landraces was not rich.④The study on germplasm diversity of different sample source showed that the distribution of the trait data was more concentrated from Hebei germplasm resources ,the H′ was the smaller. while that of Shandong and Liaoning germplasm resources was higher.⑤The fuzzy membership function was used to