The invention relates to the grape cultivating technology field, and especially relates to a cultivating method reducing the content of organic acids in winter fruits of grapes. The cultivating method comprises the following steps: (1) pruning; (2) accelerating germination; (3) erasing redundant buds; (4) pinching; (5) managing flowers and fruits; (6) and managing fertilization. After flowering 6-10 weeks, temperature control, light supplement by energy-saving lamps, strict control over the proportion of leaves to fruits of grapes, and other flower and fruit management measures are adopted to promote catabolism of organic acids and reduce the frequency of transport of organic acid synthesized substrates.