The invention provides a method for quickly establishing a clonal seed orchard of Castanopsis hystrix and application of the method, and belongs to the technical field of forest tree breeding. The method for quickly establishing the clonal seed orchard of Castanopsis hystrix includes the steps: selecting forest stand, cutting stems for promoting sprouting, treating rootstocks, selecting parent materials, collecting scions, performing top grafting and carrying out later management. For the first time, Castanopsis hystrix trees of 5-10 years are adopted as rootstocks, fast-growing high-quality scions suitable for orchard construction are selected as materials in consideration of genetic distance and the ratio of male flowers to female flowers, and the excellent clonal seed orchard can be established quickly through a matched grafting technology which is obtained through careful exploration and design. The method is different from previous grafting which is based on seedlings or saplings,through the scheme, the flowering time is shortened quickly, early fruiting is promoted, and the forest can be formed quickly; and the stand viability of the seed orchard is ensured, and efficient productivity of high-quality seeds is ensured.