PURPOSE: A cultivation method of sweet potato is provided to cultivate potato having enriched nutrition such as germanium, minerals, etc. to nearly prevent damages from a disaster, disease, and pest, and to increase harvest yield. CONSTITUTION: A cultivation method of sweet potato containing organic germanium comprises: a raising seedling area soil improvement step of inputting functional compost containing domestic animal blood meal to a raising seedling area before planting sweet potato seeds(S110)； a seed sweet potato immersion step of immersing the sweet potato seeds in a mixture in which an organic germanium bond peptide agent is diluted in water(S120)； a seedling production step of planting the immersed seeds in a soil-improved raising seedling area, and raising sweet potato seedlings(S130)； a cultivation complex soil improvement step of adding functional compost containing the domestic animal blood meal to a cultivation complex(S140)； and a cultivation step of transplanting the sweet potato seedlings to a soil-improved cultivation complex(S150). The functional compost is composed of 15-20% of domestic animal blood meal, 15-20% of oil cake of rice bran, 8-10% of bone meal, 8-10% of humic acid, 15-20% of rice bran, and 8-10% of zeolite. The seed sweet potato is immersed in the mixture in which water and the organic germanium bond peptide agent are diluted at a ratio of 800-1,200:1. [Reference numerals] (AA) Start； (BB) End； (S110) Raising seedling area soil improvement step of inputting functional compost to a raising seedling area before planting seed sweet potato； (S120) Seed sweet potato immersion step of immersing seed sweet potato in a mixture in which an organic germanium bond peptide agent is diluted with water； (S130) Step of planting seed sweet potato in the raising seedling area and producing raising seedlings； (S140) Soil improvement step of inputting functional compost to a main cultivation complex before planting sweet potato raising seedlings； (S1
