The invention relates to a cultivating method of Hosta plantaginea Gold Standard. The method comprises the following steps of: first carrying out sterile treatment on Hosta plantaginea Gold Standard buds excavated in the early spring; and then inoculating the buds on a bud inducing culture medium to differentiate the buds; culturing the differentiated buds for 1 month; and then cutting off a budding callus and putting the budding callus into a proliferation medium to be proliferated so as to obtain cluster buds; after dividing the cluster buds into shoots or single buds, putting the shoots orthe single buds into a seedling culture medium to culture the seedling with adventitious buds; obtaining 2-3 cm small plants after 20 days; transferring the small plants into a rooting culture mediumto be induced for rooting; selecting strongly growing sterile seedlings with developed roots; carrying out seedling adaptation indoors in an open bottle for three days; washing off agars at the rootsof the seedlings after taking out the seedlings; transplanting the seedlings outdoors after naturalizing the seedlings in a greenhouse for 40 days; and carrying out fertilizer and water management onthe seedlings. Compared with the prior art, the cultivating method of the Hosta plantaginea Gold Standard provided by the invention has the following advantages that: the reproductive speed and the evenness of the nursery-grown plants can be largely increased; the original maternal character is preferably kept; and the survival rate can be increased so that the yield is increased and the transplanting survival rate can reach 95%.