The invention discloses a bletilla direct seeding seedling culture method. The seedling culture method comprises the steps of (1) compost preparation, (2) seeding and water spraying, (3) coverage, (4) irrigation, (5) culture out of a greenhouse, (6) leaf fertilizer spraying, (7) transplanting and (8) harvesting. According to the bletilla direct seeding seedling culture method, the defect that the cost is high under the aseptic environment is overcome, natural cultivation and growth are achieved under the bacteria environment, large-scale and efficient seedling culture can be achieved, bletilla wild resources are protected, damage to natural resources is reduced, the transplanted bletilla can rapidly adapt to the natural environment, the cost is low, the growth rate is high, the method is convenient and easy to implement, the seedling culture cost is greatly reduced, batch production can be achieved, and the application value is high.