Abstract: The paper studied effects of different foliar fertilizers and their concentration on quality of Moringa oleifora, to provide certain bases for field management of M. oleifora. 0.5% KH₂PO₄, 1% KH₂PO₄, 0.5% self-made foliar fertilizer and equivalent water (control) were sprayed on M. oleifora, and the effects of foliar fertilizers on nutrition indexes of M. oleifora were analyzed. The results showed that spraying foliar fertilizers had significant effects on M. oleifora quality, and nutrition quality could be improved remarkably by spraying KH₂PO₄. Fertilizer efficiency of 0.5% KH₂PO₄ was the best, 14.06%, 55.73%, 9.54% and 8.25% higher than control in soluble sugar, vitamin C, protein and flavone. 0.5% self-made foliar fertilizer was 50.38 % higher than control in vitamin C, but significantly lower than 0.5% KH₂PO₄ in other nutrition indexes. As a conclusion, compared with other treatments, spraying 0.5% KH₂PO₄ has the greatest effects on quality of M. oleifora, which can be applied to field management of M. oleifora.