Abstract:Corylus heterophylla Fisch. is one of the important Corylus resources in China. In order to identify, evaluate and protect C. heterophylla Fisch. germplasm resources, and enhance the efficiency of utilization, we evaluated 99 accessions of C. heterophylla Fisch. using both the cluster analysis and principal components analysis. The results showed that the 24 agronomic traits had extensive genetic variation types and genetic diversity. The principal components analysis of 10 traits calculated four common factors that reflect the breeding orientation and potential of major quantitative traits. Based on the genetic divergence of agronomic traits, C. heterophylla Fisch. genotypes were divided into 5 groups. The first group can be as parents of progenies with spherical and smooth seeds, the second can be as parents of progenies with large seed type and suitable for mechanical processing, the third group can be as parents of progenies with market products，the fourth group can be as parents of progenies with round type and without stripe on shell surface, the fifth group can be as parents of progenies with high yield. Comprehensive analysis of agronomic traits provided scientific information for evaluation, protection and screening of the C. heterophylla Fisch. germplasm resources.