Light environment is one of the important physical environmental factors that are indispensable for plant growth and development. Controlling plant morphogenesis through light quality regulation is an important technology in the field of facility cultivation. LED as supplementary lighting for plant photosynthesis Traditional artificial light sources generate too much heat, such as LED supplementary lighting and hydroponic systems, air can be recycled, excess heat and water can be removed, and electricity can be efficiently Converted into effective photosynthetic radiation, and ultimately into plant matter. Studies have shown that with LED lighting, the growth rate and photosynthetic rate of lettuce are increased by more than 20%, and it is feasible to use LEDs in plant factories.Certain wavelengths of LEDs can affect the flowering time, quality and duration of a plant's flowering. Certain wavelengths of LEDs can increase the number of flower buds and flowering of plants; certain wavelengths of LEDs can reduce the flower formation response, regulate the length of the pedicel and the flowering period, which is conducive to the production and marketing of cut flowers. It can be seen that the flowering and subsequent growth of plants can be regulated by LED regulation.