High-and-low frame combined cultivating device

The utility model relates to a high-and-low frame combined cultivating device. The cultivating device comprises a nutrient solution tank, a solution supply pump, a liquid supply pipeline, cultivating frames, a liquid return pipeline and a solution return tank, wherein the nutrient solution tank is used for storing nutrient solution; the solution supply pump is arranged at the bottom of the nutrient solution tank; the liquid supply pipeline is used for guiding the nutrient solution pumped by the solution supply pump; the cultivating frames are used for providing support for cultivated plants; the liquid return pipeline is used for guiding the nutrient solution to reflow from the cultivating frames; the solution return tank is used for storing the reflux nutrient solution; the cultivating device comprises at least two cultivating frames; the cultivating frames are provided with different height and are arrayed in sequence in the direction perpendicular to the vertical direction of single cultivating frames according to the height of the cultivating frames. According to the utility model, the cultivating frame on a higher layer and the cultivating frame on a lower layer are arrayed alternately to plant plants; high-efficient cultivation of the plants can be realized; the space utilization rate of a greenhouse is improved; planting amount and yield of the plants in unit area are improved to a certain extent.