Due to the fact that the current cultivated buckwheat varieties are at flowering stage, the stamens of the flowers are twice as long as the pistils, which makes it difficult to teach the pollen, and the seed setting rate is greatly reduced and the yield is also reduced. In order to solve this problem, Japan’s Miyazaki University’s biological research selected a self-pollinated wild buckwheat and genetically segregated the genetics of wild buckwheat into cultivated buckwheat to obtain new strains for the next generation. Hybridization, the fourth generation, the stamen and pistil of the same length, so as to obtain self-pollination of self-flourishing new varieties of buckwheat. In addition to pollination and fertility rates, this self-reproductive buckwheat yield is 65% to 80% higher than that of common buckwheat.