Abstract: This paper proposes that array laser, wavelength division multiplexing (density wavelength division multiplexing) and multi-magnetization layers storage are combined to realize 3D information storage. The coupling object lens of optical fiber head can auto-focus the optical spot in near field, so that enormous information can be written and read simultaneously, and the tracking time of three-dimension information storage can be reduced greatly. At the same time, the optical signal amplitude received by photo-electricity detector is simulated by computer in detail. The search of parallel storage mode is important and basic to realize high density and enormous capacity storage.