To clarify the genetic diversity of major phenotypic traits in the currently introduced foreign sugar beet varieties， 127 foreign sugar beet varieties were used as experimental materials for analysis of 18 agronomic traits. Correlation analysis was performed to explore the relationships among various agronomic traits of these foreign sugar beet varieties， and superior sugar beet varieties were screened according to the results of cluster analysis. The results showed that， the genetic diversity indices of the 10 qualitative traits range from 0.6616 to 1.2689， demonstrating substantial diversity variation. The coefficients of variation for the 8 quantitative traits range from 3.76% to 83.90%，the coefficient of variation of disease incidence was the highest. Correlation analysis revealed that there were extremely significant positive correlations between root length and root width of sugar beet varieties， while a highly significant negative correlation was observed between incidence rate and vascular bundles number. Results of cluster analysis indicated that the 127 accessions could be classified into four distinct groups： GroupⅠ contained sugar beet varieties with high sugar content； GroupⅡ included varieties exhibiting high levels of both root yield and sugar content； Group Ⅲ featured varieties with the highest root yield， which could be extensively promoted and cultivated as high-yielding sugar beet varieties based on geographical conditions； Group Ⅳ comprised varieties with root yield lower than that of the other three groups， showing no distinct advantages.The results of this study provide a valuable reference for understanding the phenotypic genetic diversity of exotic sugar beet varieties and further screening high-quality varieties with high yield and high sugar content.