Abstract: Using KH₂PO₄(0.2%)+sucrose(0.3%)、gibberellin(30ppm)、Israel special fertilizer(0.3%)、boric acid(0.3%) to treat the plant of lingwu long Jujube grew in greenhouse. This paper studied the effect of different chemical treatment on growth and fruit setting rate in lingwu long Jujube. The results showed that all these treatment have no significance effect on growth、net photosynthesis rate ,and water utilization efficiency ,but the fruit setting rate of lingwu long Jujube were increased by 3 times and 2.6 times when treated by saccharose(0.3%) and Israel special fertilizer(0.3%) respectively ,and the leaf chlorophyll contents and shading rate were increased also when treated. Above all, Israel special fertilizer(0.3%) has significant effect on fruit setting rate and shading rate in lingwu long Jujube when spayed at flower stage and fruit growth stage ,that it should be applied in lingwu long Jujube cultivation.