Provided is a culture device in which air can be uniformly circulated to each seedling-raising shelf and the environment of each seedling-raising shelf can be made uniform even if the number of installed air conditioning devices is small； also provided is a culture method using this culture device. The culture device includes: a building structure 1 that constitutes a closed space； an air conditioning device 9 that is installed in a ceiling inside the building structure； and multi-level shelf-type plant-raising devices 3-8 that are disposed in the building structure 1 and that have open front surfaces. The culture device is characterized in that, in plan view, an air inlet port of the air conditioning device is positioned to the front of the front surfaces of the multi-level shelf-type plant-raising devices 3-8, and an air outlet port 9f of the air conditioning device is positioned to the rear of the front surfaces.
