PURPOSE: An antibacterial phytoncide fiber treatment agent and an antibacterial treatment method are provided to show superior antibacterial properties and emulsification stability without harming the human body and to prevent a color change when the treatment agent is treated on a fiber. CONSTITUTION: An antibacterial phytoncide fiber treatment agent with improved emulsification stability contains phytoncide essential oil, an emulsifier, and alcohols in water. The weight of the alcohols is 1-2 times greater than the essential oil. The alcohol is ethyl alcohol. An antibacterial treatment method comprises the steps of: mixing the treatment agent and acryl-based binders； dipping a fiber or a fabric into the mixture； and heating the fiber or the fabric.본 발명은 인체에 무해하고, 항균성이 우수하며, 장시간 방치해도 유화 안정성이 우수하고 섬유 원단에 가공시 염색 색상에 변화가 없는 피톤치드 섬유 항균가공제 및 항균 가공방법에 관한 것으로서, 물에 피톤치드 정유, 유화제 및 알코올이 혼합되어 이루어지는 것을 특징으로 한다.
