In this study, the zeolite X/activated carbon composite (zeocarbon) was synthesized from rice hull and it was characterized. The activation of the carbonized granule was carried at 900 ℃ for an hour and it gained the best result when the ratio for amounts of steam to granules was 0.5. By hydrothermal reaction from the activated granule, zeocarbon was made from amorphous sodium aluminosilicate that was obtained from the silica of rice hulls and sodium aluminate in pores of granules. To synthesized the zeolite from amorphous sodium aluminosilicate in the activated granule, it was aged for 12 h after mixing with alkali solution at 40 ℃ and crystallized for 8 h at 100℃. From nitrogen adsorption and desorption isotherms of zeocarbon, it was characterized as a combined shape isotherm of type Ⅰand Ⅳ with well-developed mesopores of 30 ～ 40 Å, pore surface area was 620 m2/g and the total pore volume was 0.39 cm3/g. From the results of SEM and EDS analyses, it was confirmed that the synthesized granule was in composite from which had well distributed zeolite X type crystals inside the activated carbon pores.