Lighting device for plant cultivation using led

PURPOSE: A lighting device for plant cultivation which uses an LED is provided to offer light of optimal wavelength which is necessary for growth at the various locations according to growth step of plant. CONSTITUTION: A lighting part(110) comprises a plurality of LEDs irradiating plant with light. The lighting part is composed of an LED lamp part(111), a reflector part(112), a lighting part insert terminal(113). A base part(130) is detachably connected to the lighting part. A controller(140) supplies a power source and outputs an operating control signal. An extension part(120) is detachably connected between the lighting part and the base part. The extension part changes the location of the lighting part according to growth step of the plant.