The experiment of applying dif ferent amount of chemical fertilizer w ith organic manure in soybeanfield has been co nducted .The result s showed that the ratio of soybean y ield relying on soil was 74 .9 %-88 .6 %.Af ter applying org anic manure , the dependence of soy bean yield on soil declined significantly .Soleapplication of org anic manure , the soybean yield increased by 22 .3 %-33 .6 %, and on the base of chemicalfertilizer combining wi th org anic manure , the soy bean yield increased by 12 .7 %-17 .7 % due to the effect ofo rganic manure .Effects of the fertilizers on soybean y ield increase resulted mainly f rom increasing the number ofbean pods and grains .