Dawuzui is a variety of day lily,which has the function of both medicine and food.In order to improve theyield and benefit of "Dawuzui",5 550 plants/667 m²,5 130 plants/667 m²,4 460 plants/667 m²,4 450 plants/667 m²,4 170 plants/667 m² were designed to study the effects of transplanting density on the survival rate,growth character-istics,yield and quality of "Dawuzui".The results showed that the planting density of 4 450 plants/667 m² signifi-cantly increased the survival rate,bud growth,bud yield,protein and carotene content of "Dawuzui",but had littleeffect on total sugar,calcium and iron content.The reasonable transplanting density of"Dawuzui"should be 4 450～4 760 plants/667 m² to ensure stable production benefits.