a method for treating surfaces of textile is disclosed . a coating solution , in which a polymer with reactive groups is utilized to give various functions , such as hydrophobicity , anti - bacteria or hydrophilicity is formed . the coating solution with different viscosities , specially low viscosity , 100 cps or less , can be continuously coated onto a surface of the textile by employing a surface treating technique of gravure coating and appropriately adjusting the gravure meshes . after drying , a highly durable , washable and firm textile with single or multi - functions , such as outer hydrophobic surface and inner anti - bacterial and hydrophilic surface .