Non-wettable surfaces with high water contact angles (WCAs) and low sliding angles of drops,which are called superhydrophobic or ultrahydrophobic, have received tremendous attention in recent years. A water droplet easily rolls off a superhydrophobic surface, washing dirt off in the process and effectively cleaning the surface. This unusual wetting behavior is called the Lotus effect or self-cleaning. For the fabrication of the “lotus-type” surface, a combination of two major requirements, low surface energy and the magnified of the degree of roughness, should be utilized. The problem of waterproofing surfaces, specifically for fabrics, was first critically examined by Wenzel. For a superhydrophobic textiles, the original Cassie-Baxter model better describes the wetting of rough surfaces. Superhydrophobic surfaces can be produced simply by making woven or non-woven cloth hydrophobic without altering its roughness. As the roughness of the cloth is usually on a relatively large scale, some efforts have been made to generate smaller scale structures to increase the superhydrophobicity and pressure resistance of the structures. Fractal structures have been reported to effectively enhance the hydrophobicity of a solid surface, but so far there has been only limited research on how surface shapes and dimensions enhance surface hydrophobicity and water sliding behavior. Various weft knitted structures can be produced using different knitting techniques. These structure result in different surface roughness. In this paper research the effect of structural parameters of weft knitted fabrics on the superhydrophobicity. Different single and double jersey weft knitted fabrics were produced using 20-Ne polyester spun yarn. In order to minimize the surface energy of knitted fabrics, fluorocarbon compound was used. Sliding angle of droplet on the fabric was measure in technical back and face, as well as wale and course directions. Comparision the smooth polyester film , Melinex and the knitted fabrics showed that fabric structures remarkably have changed the surface roughness, and sliding angles. Also, the findings showed that structural parameter has a great effect on superhydrophobicity. Also the finding show that various knitted structure and stitch density, has a great effect on superhydrophobicity. In addition, the correlation between roughness factor and sliding angle of these surfaces was examined. The results indicated that roughness have no significant influence on the sliding angle. In order to create surface roughness on the polyester fibers, alkaline hydrolysis was used, and the results from it, were compared with nano particles. Polyester weight reduction process, alkaline hydrolysis , by creating pits which mainly result from the presence of TiO2 particles, efficiently roughened the surface in order that after the fluorocarbon coating , remarkable improvement in fabric repellent properties was observed. so that there was no necessity to use nanoparticles. Moreover, deformation and movement of a droplet sitting on a surface in different situations was simulated.