The invention relates to the technical field of plant growing, and provides a Dendrobium officinale growing method. The Dendrobium officinale growing method comprises the following steps: A, selection of a culture host: in a high mountain broadleaf forest, selecting an evergreen tree woodland with thick trunks, abundant moisture, lush tree crowns, loose barks and longitudinal fissures; B, preparation of seedlings: in March to April, selecting the seedlings of one-year-old to two-year-old Dendrobium officinale, cutting out overlong fibrous roots and old stems which are 3 or more years old, and cutting the plants into smaller ones; C, culture pretreatment: performing treatment with a cutter at recesses of the trunks or branches or every other 30-50 centimeters to obtain culture regions, cultivating mosses, and spraying a symbiotic bacterium solution; D, culture: after the proliferation of the mosses, implanting the base parts of the Dendrobium officinale seedlings in the fissures, and performing fixing; E, nursing: after growing, performing root irrigation, performing spraying, and applying a slow-release granular fertilizer and a foliar fertilizer; and F, collection: 1 year after growing, performing collection and pruning. The Dendrobium officinale growing method provided by the invention can solve the problem that the Dendrobium officinale is low in survival rate and poor in quality.