PURPOSE: A manufacturing method of natural insecticide is provided to cultivate environmental-friendly crops by developing the natural insecticide using Chinese pepper and herbage which are natural resources.CONSTITUTION: A manufacturing method of natural insecticide comprises the following processes. A first process: 2000ml or a fixed quantity of Chinese pepper and pyroligneous liquor composite natural insecticide is manufactured by filtering the Chinese pepper and the pyroligneous liquor composite natural insecticide using a hydraulic linkage after evaporating moisture of 8000ml or the fixed quantity included in the pyroligneous liquor and simmering the Chinese pepper by gradually heating 1000g of well-ripen Chinese pepper fruit and 1000ml of pyroligneous liquor in the pot. A second process: 4000ml or a fixed quantity of the Chinese pepper and the pyroligneous liquor composite natural insecticide is manufactured by mixing 2000ml of the pyroligneous liquor and 2000ml of simmered liquid which is manufactured by gradually heating 1000g of well-ripen Chinese pepper fruit and 10000ml of water in the pot. A third process: 2000ml of simmered Chinese pepper liquid is manufactured by gradually heating 1000ml of well-ripe Chinese pepper and 10000ml of water in the pot. A forth process: The Chinese pepper and the pyroligneous liquor composite, and the Chinese pepper liquid manufactured through the first process, the second process, and the third process are used as an insect-fungicide and also used as the insect-fungicide for crops by dissolving in the water at a fixed ratio.COPYRIGHT KIPO 2013본 발명은 천연 살충제 제조방법에 관한 것으로 초피나무열매 1000g비율로 목초액 10000ml을 넣고 100도 열로 끓여서 초피열매와 목초액을 여과하여 목초액 초피조성물 용액을 제조하여 상기용액을 일정한 비율로 물에 희석하여 천연 살충제로 사용하는 것이 특징이다