The present invention relates to a growth method capable of producing disease-free strawberry seedlings throughout the year, and in particular, easy to control the environment, blocking the access of external pathogens, strawberry seed growth method using a multi-stage bed to increase space and energy efficiency It is about. The present invention is to create a seedling environment in a closed form in order to produce strawberry seedlings uniformly without being affected by the external weather environment. Since the strawberry seedling environment is isolated from the external natural environment, it is possible to nourish the runner plant of the strawberry without the occurrence of pests, so that it is possible to stably produce high quality uniform seedlings, and to keep the growth of the strawberry satisfactorily by timely transplanting. The present invention selects the seedlings having a smaller size than the seedlings of the seedlings used in the existing strawberry growth method, and when the runners are generated from the growthers, the runner tips are generated and fixed to the medium. Roots and new leaves are generated to grow into a runner plant； When the runner plant has a size similar to that of the proliferating body, propagating separately from the mother cell as a new proliferating body； Seedlings of strawberry seedlings using a closed seedling system, characterized in that when the runner plant generated from the first and second proliferators is generated and is similar in size to the first proliferator, it is separated from the mother cell and multiplied by a new proliferator. It is about a method. The independent nutrient seeding method of the present invention is suitable for the physiological characteristics of strawberry varieties by appropriately controlling the environment, that is, light irradiation amount, temperature and CO 2 concentration, in a closed seedling system designed to not be affected by the external weather environment. By pr
