PROBLEM TO BE SOLVED: To provide a treatment agent for preserving a plant body over a long term while keeping the natural beauty of the plant body and to provide a method of preservation treatment.SOLUTION: The treatment agent for preserving the plant body includes mixing a resin-containing solution in which a fine powder polymer is dissolved or dispersed in an organic solvent with a mordant.COPYRIGHT: (C)2012,JPO&INPIT【課題】植物体の天然の良さを維持しつつ、長期間の保存を可能にする植物体の保存処理剤及びその処理方法の提供を目的とする。【解決手段】微粉末ポリマーを有機溶媒に溶解又は分散させた樹脂含有溶液と媒染剤とを混合したことを特徴とする。【選択図】 なし