A light-emitting diode illumination structure which is suitable for multi-plant growth is disclosed and is applied in indoor planting, comprising at least one circuit board, a drive circuit, a mode adjusting circuit and a time adjusting circuit. The circuit board is configured with diode sets including a plurality of white light diodes, blue light diodes and red light diodes that are disposed on a bottom surface thereof for emitting corresponding colored lights. A spacing formed between the adjacent white-light diodes is less than that formed between the adjacent blue-light diodes or red-light diodes. The circuit board is coupled to the mode adjusting circuit and the time adjusting circuit via a drive circuit. The mode adjusting circuit is utilized to drive the circuit board to simply light up one of the diodes sets, or simultaneously or sequentially light up all of diodes sets, thus to form at least four illumination modes. An illumination time and a dormant time of each illumination mode can be controlled by the time adjusting circuit, capable of satisfying the requirements of photoperiods for various plants and effectively preventing chlorosis of plant leave due to over-irradiation of blue or red light.本發明係一種適用於多類植物生長之發光二極體光照結構,係應用於室內植栽,包括至少一電路板,電路板底面佈設有複數個白光、藍光及紅光二極體等二極體組,能發出對應色光,相鄰白光二極體之間距係小於相鄰藍光或紅光二極體之間距,該電路板係透過一驅動電路,連接至一模式調整電路及一時間調整電路,該模式調整電路能使該電路板僅點亮其中之一二極體組,或同時或依序點亮全部,形成至少四種光照模式,該時間調整電路能控制各光照模式下之光照及休眠時間,以滿足不同種類植物之光週期,且能有效防止葉片因藍光或紅光過度照射而發生白斑病變。1‧‧‧光投射模組10‧‧‧電路板11‧‧‧驅動電路12‧‧‧模式調整電路13‧‧‧時間調整電路101‧‧‧白光二極體102‧‧‧藍光二極體103‧‧‧紅光二極體A、B、C‧‧‧間距
