The invention discloses a modified resin composition, which includes the following components of, by weight, 35% to 95% of polyamide, 4% to 15% laser sensitive additives and 1% to 60% of other additives, and the added weight of the total content is 100%. The chemical general formula of the laser sensitive additives is XY2O4, and the laser sensitive additives are of isometric crystal system with the axial length a=b=c and the axial angle alpha=beta=gamma=90 degrees; a tetrahedral atom is a metal atom from an IIIA group, an IB group, an IIB group, a VIB group, a VIIB group and a VIII group of periodic table of the elements, wherein the metal atom includes one of chromium, manganese, iron, cobalt, nickel, copper, zinc, palladium and aluminum, preferably one of transition metal chromium, manganese, copper and metal palladium; and an octahedral atom is a metal atom from an IIIA group, an IB group, an IIB group, a VIB group, a VIIB group and a VIII group of periodic table of the elements, wherein the metal atom includes one of chromium, manganese, iron, cobalt, nickel, copper, zinc, palladium and aluminum, preferably one of transition metal chromium, manganese, copper and metal palladium. The modified resin composition has the advantages of being high in processing temperature and small in space among metal wires.