Abstract: Effect of covering pouches of different materials on quality of the bagged grapes was studied. Pouches made of white, wood pulp paper, translucent plastic film, and nylon mesh were used to cover Jumeigui grapes on the vines 15 ds after flowering. Regardless the differences in material, the bagging increased individual fruit weight and soluble solids content, and reduced titratable acid as compared to control with full exposure to the ambient conditions. The white paper pouch showed the most desirable results over all, as the fully ripened grapes had an appealing shape with a hardness of 0.081 kg·cm^-2, weight at 10.27 g·fruit^-1, soluble solids at 19.00%, total acid at 0.208%, Vitamin C at 4.410 mg·hg^-1, solids/acid ratio of 91.35, and stability for shipping and storage. The result provided a positive direction for the standardized production of high quality grapes in the southern regions.