PROBLEM TO BE SOLVED: To provide a wood preservative friendly to the environment and having an excellent insect-proof and/or rot-proof effect.SOLUTION: The wood preservative contains a plant belonging to the Commiphora genus or its processed substance. The processed substance of a plant belonging to the Castanea genus is a pericarp of chestnut or a testa of chestnut or a processed substance thereof, and the processed substance of a plant belonging to the Commiphora genus is myrrh or a processed substance thereof. Further, the preservative contains a plant belonging to the Uncaria genus, the Sophora genus or the Styrax genus or a processed substance thereof.COPYRIGHT: (C)2009,JPO&INPIT【要 約】【課 題】環境にやさしく、優れた防虫又は/及び防腐効力を有する木材保存剤を提供する。【解決手段】コミフォラ(Commiphora)属に属する植物又はその処理物を含有することを特徴とする木材保存剤。【選択図】なし