The present invention relates to an insecticide composition containing a plant extract and a manufacturing method thereof. More specifically, the insecticide composition comprises a plant extract, pyroligneous liquor and a surfactant and is manufactured through a extracting step of extracting the plant extract by putting plants into an organic solvent; a concentrating step of concentrating the plant extract extracted through the extracting step with a decompression concentrator; and a stirring step of putting the pyroligneous liquor and surfactant in the plant extract passing through the concentrating step and performing stirring. The insecticide composition containing the plant extract manufactured through the steps exhibits excellent insecticidal effects since the insecticide composition contains a large quantity of matrine components with excellent insecticidal performance.본 발명은 식물추출물이 함유된 살충제 조성물 및 그 제조방법에 관한 것으로, 더욱 상세하게는 상기 식물추출물이 함유된 살충제 조성물은 식물추출물, 목초액 및 계면활성제를 포함하여 이루어지며, 식물을 유기용매에 투입하여 식물추출물을 추출하는 추출단계, 상기 추출단계를 통해 추출된 식물추출물을 감압농축기로 농축하는 농축단계, 상기 농축단계를 거친 식물추출물에 목초액 및 계면활성제를 투입하고 교반하는 교반단계를 통해 제조된다.상기의 과정을 통해 제조되는 식물추출물이 함유된 살충제 조성물은 살충성능이 우수한 마트린 성분이 다량 함유되어 우수한 살충효과를 나타낸다.