The invention relates to an organic black peanut cultivation method and belongs to the technical field of crop cultivation. The organic black peanut cultivation method particularly includes the steps of cultivation land selection, soil preparation, seed treatment, seeding, membrane rupture and seedling promotion, seedling checking and supplementing, proper intertillage weeding, growth controlling, water management strengthening, harvesting and the like. The organic black peanut cultivation method has the advantages that rural land with no industry and no pollution is selected for planting, pesticides are avoided to be used in seed treatment, pest control and prevention and fertilization, a complete organic cultivation technology is adopted, and black peanuts planted are guaranteed to be pure natural without pollution, are safe in quality and rest assured to eat; since the steps of sufficient basal dressing, plastic film mulching, water management strengthening and the like are adopted, output of the black peanuts in increased by 10%-15%, the grain plumpness reaches 95%, and the organic black peanut cultivation method is simple in process and easy to operate.