Abstract: Determinations were conducted on visual physics magnitude of Entandrophragma cylindricum, Guibourtia tessmannii and Fraxinusmandschurica wood before and after painting alkyd varnish. The results show that painting reduced the luminance (L*) and the chrominance (a*) oftested wood specimen, the biggest change L* was specimen of G. tessmannii wood with obvious decrease of luminance. The absolute value (Δa*) ofF. mandschurica wood was the largest, greener than that of untreated one. The chrominace (b*) of three kinds of wood specimen increased afterpainting, and the absolute Δb* was ordered by specimen of F.mandschurica > G. tessmannii > E. cylindricum. Chrominance aberration (ΔE*) oftested wood specimen had little difference before and after painting.