The invention discloses a cultivation method for improving the ornamental quality of an organic gold finger grape bonsai. The method comprises the steps of container selection, preparation of nutritional soil, selection of nursery stocks, planting, daily management, manufacturing of an auxiliary frame, tree form cultivation, flower and fruit management, disease and pest control and pot replacement. The nutritional soil contains secondary metabolites of an orchard, reed powder, coco coir, turfy soil, vinegar residues, rice chaff, perlite, vermiculite, yellow sand, soil and decomposed animal manure in the volume ratio of (1-2):1:1:1:1:1:1:1:1:(1-2):(1-2). The prepared nutritional soil is sieved and exposed in the sun, the porosity is 55-70%, and the pH value is adjusted to be 5.5-7. The gold finger grape bonsai cultivated through the method is reasonably distributed in a limited space, clusters are uniform, the fruit quality is good, residues of pesticides and fertilizers are avoided, and the ornamental quality is high.