The effects of different Zn levels on the yield,quality and nitrate uptake of celery in the green house were studied.The results showed that the maximum yield of celery was reached at 30kg/hm\+2 zone of zinc sulfate.Meanwhile,the nitrate contents of the leaf and the petiole were reduced by 28.6% and 29.5%.Application of Zn fertilizer could increase contents of Vc.However,little influence was found on soluble sugar.