AbstractWe present the properties of a large sample (12,282) of nearly face-on low surface brightness disk galaxies selected from the main galaxy sample of SDSS-DR4. Those properties includes B-band central surface brightness μ₀(B), scale lengths h, distances D, integrated magnitudes, colors and some resulted relations. This sample has μ₀(B) from 22 to 24.5 mag arcsec⁻² with a median value of 22.44 mag arcsec⁻². They are quite bright with M_B taking values from −18 to −23 mag with a median value of −20.08 mag. The disk scale lengths h are from 2 kpc to 19 kpc. There exist clear correlations between log h and M_B, log h and log D. Both the optical-optical and optical-NIR color-color relations show most of them have a mix of young and old stellar populations.