The invention discloses a high-root-tuber-yield and high-sugar-content sugarbeet cultivation method, which relates to a sugarbeet cultivation method. The method solves the problems of low sugar content in root tuber and difficulty in increasing both yield and sugar in the conventional sugarbeet cultivation. In the invention, the conventional cultivation method is improved by selecting high-quality seeds, increasing planting density, reducing nitrogen fertilizer, increasing phosphorus and potassium fertilizers, applying microelement boron and zinc, and other measures. The sugar content in the root tuber of sugarbeet cultivated in years with normal rain can reach 17.5 to 18.5 percent; and compared with the cultivation method widely used at present, the sugar content in the root tuber is increased by 1.0 to 1.5 percent, and the yield of root tuber is increased by 20 to 30 percent. The method is applicable to the promotion and use of agricultural techniques in main sugarbeet growing areas.