The invention discloses a lamp and a method for reflecting an LED (Light Emitting Diode) light source by an optical disk. The lamp consists of a hot air vibrating cylinder, a positioning LED element, and a support frame of a filament lamp, and the optical disk is utilized for realizing the one-point irradiation multi-point reflection; and the hot air is utilized for realizing vibration. The lamp can be widely applied to the fields of stages, and indoor and outdoor color decoration lights, utilizes waste optical disks, can be promoted and applied in large area, includes a hanging type, a wall mounting type and a seating type, can be produced in a industrialization, standardization, serialization and universalization manner, and belongs to the field of the application of lamps and LED light sources.