The invention relates to a corn-paddy rice distant hybirdization method. The method comprises parent selection and pretreatment, grafting, seedling growing and colonization. 1, the parent selection and pretreatment process comprises selecting varieties suitable for local environment conditions as parents and carrying out pretreatment through seed immersion and pregermination, 2, the grafting process comprises cutting a part of the corn germ along an inclined direction, cutting the rice germ along an inclined direction, fast bonding the rice germ to the incision of the corn germ, inserting a fixing prod into bonding centers of the scion and stock so that the fixing prod goes through the centers and tightening the bonding part, 3, the seedling growing process comprises gently putting the fixed grafted seedlings into a container paved with a wet filter paper one by one, carrying out pre-culture at humidity of 80-85 degrees for 3-5 days, when the callus parts of the scion and stock are basically bonded and the scion produces young leaves, transplanting the grafted seedling into a matrix in a seedling growing cup and carrying out seedling growing, and 4, the colonization process comprises when 2 true leaves are produced after seedling growing for 10-15 days, carrying out colonization on the grafted seedling in a field at nightfall or in a cloudy day and usually keeping the soil moist. The method provides a novel approach for greatly improving a paddy rice yield.