Using 5-year-old ‘Frei seedless’ grapes as the test material，five organic foliar fertilizer spraying treatments were set up，namely FY(organic acid)，FB(organic acid+B)，FZ(organic acid+Zn)，FW(organic acid+B+Zn)and FA(organic acid+B+Zn+5-aminolevulinic acid)，with clean water(CK)and conventional amino acid foliar fertilizer(FS)being the control，and the effects of different organic foliar fertilizers on grape photosynthesis，fruit yield and quality were studied.The results showed that the chlorophyll content of FZ treated leaves increased significantly by 14.63% and 4.93%，respectively，compared with CK and FS.The net photosynthetic rates of FZ and FA were significantly higher than those of CK and FS，and the stomatal conductance and transpiration rate were significantly higher than those of CK.The single fruit weight of FA，FW and FZ was significantly higher than that of CK and FS，and the yield of FZ was the highest，which was 12.76% higher than that of CK.Through the analysis of grape fruit color parameters，FZ had the best coloring effect on grape peel，and the soluble sugar of the fruit increased by 14.42%，compared with CK.The vitamin C content，soluble solids and anthocyanins of FA and FW were significantly higher than those of CK，and the soluble solids and anthocyanins treated by FW were also significantly higher than those of CK.In summary，spraying organic foliar fertilizers FZ，FA and FW with Zn added had the best effect on the photosynthesis，yield and quality of grapes，indicating that the addition of Zn to foliar fertilizer could effectively enhance leaf photosynthesis，promote grape yield，and improve fruit color and quality.