Abstract:In order to understand the genetic basis of foreign mungbean, broaden the kinship and improve the breeding efficiency of domestic mungbean gremplasm, we studied the genetic diversity of 352 foreign mungbean accessions from 15 countries by evaluating 5 qualitative traits and 10 quantitative traits. The results showed that there was a high level of genetic variation in 15 morphologic traits among 338 mungbean accessions except 14 accessions that could not mature for the reason of geography and climate. The genetic diversity index of leaf shape (0.69) and young stem color (0.69) were the highest in the five qualitative traits and length of straight (2.08) and 100 seed-weight (2.07) were the highest in the ten quantitative traits. UPGMA cluster analysis showed that 338 mungbean accessions were classified into 6 groups and the average yield distinctively different between groups. The Group 5 have some traits of early maturity, short stem and large grains, these accessions could be used for reference in the hybridization breeding. The mungbean accessions in Philippines, Indonesia, ARC-AVRDC, Korea, India, the United States and Russia had different characteristics and showed abundant genetic diversity; The diversity index of Russia was the highest, In contrast, the diversity index of Korea was the lowest; The accessions in Indonesia had the highest number of stem node, seeds per pod, pods number per plant and grain yield per plant and the lowest growth period, they were early-maturing, large seed sand high yield, and could be used for some basic breeding materials in our country. The accessions in seven countries were divided into 3 groups based on UPGMA, group 1 included some mungbean accessions in Indonesia, group 2 included some mungbean accessions in Korea, group 3includedthe rest of 5 populations . It indicated that there were some relationships between population traits and geogeaphical origin.