The clay resource from Zhang-Yuan Taitung county, was mined more than 3 decates. The product was only clay prowder prepared by drying and grinding. The primary application was the water resistant in civil engineering and adsorbant of odor. Its worth was put as the same level of inductrial mineral. Recently, the expanded clay was discovered a lot of novel applications after treatment of intercalated organic material into the crystal layered structure. This organic clay can be mixed into polymer such as nylon in the form of molecular sheet and the admixture nanocomposite material has excellent properties compared with the raw material. This paper reported the treatment of Taiwan local clay to become the pillared structure organic clay. The processes included purification processes such as dispersion, classification and centrifugal settling; expansion processes such as ion exchange, organic intercalation. The final product was examined by low angle x-ray diffraction (material XRD), surface area measurement, and cation exchange capacity (CEC). It was concluded that local clay used as the raw material of organic clay, the yielding is near 50%. It belongs to good grade in general clay resources.