The present invention relates to a light emitting device for plant growth with variable wavelengths using quantum dots and, more particularly, to a light emitting device for plant growth with a variable wavelength using quantum dots, which optimizes the growth of plants through a light source having a variable wavelength and improves the quality of the plants, by irradiating a light source onto a sheet on which a plurality of quantum dots are arranged and controlling the light source so as to have the necessary wavelengths for the respective growth phases of plants and the kinds of plants.
