Adsorption characteristics of triadimefon and diniconazole(pesticide) by natural zeolite(CLIN) and several synthetic zeolites were investigated. The synthetic zeolites used in this study were as follows: Faujasite synthesized from coal fly ash(FAUF); Zeolite synthesized from the mixture of FAU and Na-Pl synthesized from the ratio of Cheju scoria 6 to coal fly ash 4 by weight((FAU + Na-Pl)SF); Waste fluid catalytic cracking catalyst(FCCw). The distribution coefficient, KD and Freundlich constant, KF decreased in the following sequence : FCCW>FAUF>(FAU+Na-Pl)SF > CLIN among the zeolites. The distribution coefficient and the adsorption capacity of (FAU + Na-Pl)SF for pesticides were 4.4 and 2.6 times higher for triamefon, and 2.0 and 2.4 times higher for diniconazole than those of CLIN, respectively.