This research makes use of the study that the deoxyribonucleic acid (DNA) has and can adsorb the special property of the material of benzene compounds to adsorb result to the cancer-causing dyestuff. Because the DNA has good of water-soluble quality but also as a result the scope of to limit its application. Therefore we try to modify after using the cross-linking processing make the DNA insolubilized, and its cancer-causing dyestuff adsorb result. The result shows, the DNA film presents after taking copper nitrate to cross-linking processing as a result is good of insolubilized, the modified DNA finds after carrying on the test of adsorbing the result to the cancer-causing dyestuff, Not only adsorbing alone by DNA film but also adsorbing by DNA dipped non-woven fabric can reach to adsorb 86%~92% and adsorb time of reaching the saturation about 8 days.
