Chinese fir wood was dried under 105 ℃, then vacuum pressure impregnating treated respectively with PVA, MF, PVA MF resins, dried again under high temperature(105 ℃～150 ℃), and finally kept for 14 days under room temperature for testing. Hygroscopicity, coefficient of resin remained, coefficient of volume expansion, rate of weight gain and coefficient of dimension variation, chromatism and hardness of specimens were measured and calculated. The testing results showed that the modification effect of Chinese fir was the best among the experiment conditions when MF resin was used as impregnating agent and then dried under temperature of 105℃～110℃.