NaY zeolite with crystal size of 22 nm has been synthesized from Vietnamese A Luoi kaolin in hydrothermal crystallizing condition with the present of DNy template. Results obtained from XRD, IR, SEM, TEM, BET prove that NaY has high crystallinity, high surface area, pore size distribution in both microporous range (0.81 nm) and mesoporous range (12 nm).