The typical characteristics of erect and semi-erect mung bean varieties were studied by analyzing the yield components. The results showed that the performance of yield components between erect and semi-erect mung bean varieties was opposite and reached extremely significant differences. The erect varieties had the traits with more number of pods per plant, shorter pods, and smaller seeds, however, the semi-erect varieties had the traits with less number of pods per plant, longer pods, and larger seeds. There was a significantly positive relationship between number of pods per plant and yield. In summary, we presented a breeding method of creating new erect plant type with more number of pods per plant, longer pods and larger seeds by utilizing the semi-erect varieties. The new plant type variety Jilv 14 was bred by this method. Moreover, we analyzed the effects on yield of Jilv 14 applying cultivation mode of double rows on one ridge, the results showed that the yield of Jilv 14 was increased by 11.6 % compared with that of the conventional cultivation mode.