This experiments studied the growth of nodule,root stem,leaf,flower pod and grain yield with shading at different growth stages to faba bean.The results indicated that high light was favourable to the growth of faba bean and the delayed of nodule wane.But the number of nodules was decreased and the die of nodule faster.The proportion of sideroot nodule was increased but the taproot's was decreased of shading treatment.Consequently the efficiency nitrogen fixation was low.In different growth stage,effects of the growth nodule at flowering and podding stage were the greatest.The dry weight of leaves and stem were increased significantly,but the dry weight of root and pod were decreased.