To investigate the impacts of rhizobial inoculation on plant growth and yield traits of three different varieties of green bean，the field experiments were settled in Fangshan，Beijing.The study found that the impacts of Rhizobial inoculation could significantly promote the grourth of the green bean varieties No2 and Jiliu 9.Both nodule numbers were significantly increased；and the yield increased by 41% and 29%；Rhizobial inoculation in varieties Zhongliu 5，however，the yield decreased，but total nodule number was significantly higher than that of the control and the main nodule number was also higher than the other two treatments.Thus we recommended that the application of Rhizobial inoculum should match the variety of legume plants.