The study was carried out on the effects of different tiller density on yield and yield components of Jidan 631, the results show that, removal of tiller or retained tiller had no significant effect on the yield of maize, whenthe planting density of 2000 plants/667 m², 3000 plants/667 m², 4000 plants/667 m², 5000 plants/667 m², 6000plants/667 m². The highest yield with removal of tiller or retained tiller was the planting density of 4000 plants/667 m². Jidan 631 in the production keep tiller, could save labor and time, to promote the efficiency of the section production purposes. Keep tiller in production had promoting effect to enhance the production capacity of high yield in the region.