The invention belongs to the technical field of electrical equipment application, and especially relates to a greenhouse disinsection LED lamp. The greenhouse disinsection LED lamp comprises a lamp holder; the lower end of the lamp holder is fixedly provided with an LED lamp slice. The greenhouse disinsection LED lamp is characterized in that the upper end of the lamp holder is fixedly provided with a drug storage room, and the upper end of the drug storage room is fixedly provided with an extruding piston, and the lower end of the drug storage room is provided with a valve; the joint of the lamp holder and the drug storage room is provided with several air breathing holes; the lower end of the LED lamp slice is provided with a thin film, and the upper end of the thin film is evenly provided with several through holes. greenhouse disinsection LED lamp is simple in structure and convenient to use, uniform and high-efficient in spraying drug; thus the working efficiency is improved, the labor intensity of workers is reduced; the cost is low, and the lamp is convenient to popularize and apply.