The relationship between main characters and yield of 25 mung bean varieties under spring sowing condition was analyzed by means of variance analysis, partial correlation analysis, correlation analysis and path analysis.Pods per plant had the maximum CV（29.7%）, and seeds per pod had the minimum CV（6.9%）. 7 agronomic traits affected 93.4% variation of yield, the correlation between yield and node number on main stem, pods per plant were extremely significantly positive. The partial correlation coefficients were -0.4526 and 0.4856, respectively. The correlation between yield and seeds per pod, 100-seed weight were extremely significantly positive, the partial correlation coefficients were 0.3718 and 0.4232. There was a highly significant positive correlation between pods per plant and yield（0.6816）; the correlation between branch number, 100-seed weight and yield was significantly positive（0.4160, 0.3983）. In combination with the relationship between the characters, the number of pods per plant, the number of seeds per pod and the weight of 100 seeds should be considered first in the field screening and variety selection, supplemented by plant height and pod length.