The present invention relates to wood preservative and wood surface preserving treatment process. The wood preservative consists of tong oil and rosin water in the weight ratio of 1 to 0.3-0.7, and the wood surface preserving treatment process includes the following steps: brushing the wood preservative in 100-150 g/sq m to the surface of wood, drying, polishing and repeating the foregoing steps for required times. The wood preservative has the features of being colorless, luster-less and transparent, and the treated wood is antique and possesses raised anticorrosive and waterproof properties. |