The present invention relates to a method for manufacturing an insecticidal monofilament, comprising: liquefying a powdered insecticide having a low melting point, for example liquefying delta methylene using a dissolving solution mixing the liquefied insecticide into porous silica and enabling the insecticide to permeate the nanopores drying the porous silica disintegrating the dried porous silica into particles of the same or similar size as the original size and forming a master batch (MB) of insecticide by mixing many compounds, including low-density polyethylene (LDPE), the main ingredient. Specifically, in order to prevent an insecticide having a low melting point from melting, porous silica or the like, having good heat resistance and a very large specific surface area, is mixed to form a master batch of low-density polyethylene (LDPE) in chip form having a melting point elevated to around 1,000°C so as to impart an insecticidal function thereto. Also, after mixing the master batch composition imparted with the insecticidal function with high-density polyethylene (HDPE) chips at a predetermined ratio, extrusion scattering is used to evenly disperse and mix in an insecticide in order to obtain an insecticidal monofilament that retains said insecticidal function when used over a long period of time. Further, the insecticidal monofilament is used to obtain woven products (fiber products) which are imparted with an insecticidal function.La présente invention concerne un procédé pour la fabrication dun monofilament insecticide, comprenant : la liquéfaction dun insecticide en poudre présentant un point de fusion bas, par exemple la liquéfaction de méthylène delta en utilisant une solution de dissolution le mélange de linsecticide liquéfié dans de la silice poreuse et la perméation de linsecticide dans les nanopores le séchage de la silice poreuse la désintégration de la silice poreuse séchée en particules de la même taille ou de taille similaire à la taille dori
