This study was preliminary part to investigate the influence of surface characteristics of tektite materials finished with hydrophilic and hydrophobic chemicals on detergency of particulate soil. The hydrophilic and hydrophobic finish for PET fabric were treated with polyester, silicone and fluorine organic compound or resin respectively. Porosity, coefficient of friction and surface roughness of fabric were measured as surface structures of textile, and water up take, water vapor transport, wettability of fabric and contact angle to determine hydrophilicity of material. The porosity of polyester fabric treated with hydrophilic and hydrophobic agent were slightly decreased with increasing concentration of chemicals regardless of chemical types. And influence of finishing concentration of chemicals on coefficient of friction and surface roughness of fabric was small. The affinity to moisture such as water up take, water vapor transport, and wettability of fabric was increased with increasing concentration of hydrophilic chemicals and decreased with decreasing concentration of hydrophobic chemicals. The contact angle of solution on treated fabric were decreased with hydrophilic treatment but increased with hydrophobic finish. The whole results of surface structures and hydrophilicity of material exhibited a similar behavior in fabric treated with hydrophilic agent, but slightly differed in fabric treated with hydrophobic agent.