The invention provides a high-density culturing method of dragon-eye goldfishes. The method specifically includes the steps of 1, suitable culture pond selection and pretreatment; 2, fry putting and scientific feeding; 3, daily management, wherein dragon-eye goldfish fry are screened twice, the disabled-fish rate is reduced, the quality of the dragon-eye goldfishes is improved, and before the selection, net-hauling exercise is conducted to improve the physical quality and anti-stress capability of the dragon-eye goldfishes; 4, disease prevention and treatment, wherein in summer and autumn, photosynthetic bacteria and bacilli are splashed every half a month, and ammonia nitrogen and hydrogen sulfide in water are degraded; splashing a copper sulfate solution to the ponds when the water-bloom phenomenon occurs in the water. The method high-density culturing method of the dragon-eye goldfishes is scientific and reasonable in technology, convenient and feasible, industrial production is achieved, diseases rarely occur in the culture process, the survival rate is increased, the culture density is increased, in combination with a scientific feeding method, the costs of management, feed and the like are saved, and the cultured dragon-eye goldfishes are high in yield and outstanding in feature.