Nanofibres are widely used due to their high levels of special surface and increased porosity in fibers, resulting in a significant increase in their specific surface. In this study, polysulphon nanofibers with various surface morphologies were developed using electroscentrifuge spinning system. Some parameters influencing the fiber morphology including the solvent system, angular velocity of the spinning system and relative humidity of the environment were studied through electron microscopy, field propagation, absorbance and depletion porosity (BET) and contact angle. The acetone/dimethylformamide solvent system has a higher ability to produce porous nanofibers than the tetrahydrofuran/dimethylformamide solvent system due to its higher vapor pressure. Even the porosity of the fibers derived from the acetone/dimethylformamide system has spread throughout the bundle. Also, the relative humidity of the environment had a significant effect on the porosity or superficial shrinkage of the fibers, increasing the relative porosity or shrinkage of the fibers by increasing relative humidity. The increase in angular velocity leads to elongation of porosity and increased fiber diameter, so that the mean diameter of the polysulfone polymer nanofibers produced from the DMF / ACETONE solution, at a relative humidity of 75%, at a Different velocity spinning speeds of 1500 and 3000 rpm were obtained at 1357 and 2718 nm, respectively. The results of the BET test confirmed the microscopic observations. With the increase in relative humidity and the use of the acetone/dimethylformamide system, despite increasing average fiber diameter, porosity and special surface of ??the fiber increased, so that The total porosity volume of the fibers in the moisture content of 30 ± 4, 50 ± 4 and 70 ± 6, respectively, was 6, 210 and 270 mm3, and the mean diameter of the porosity was 10.78, 41.66, and 36.31 nm respectively. The Contact Angle test was performed and it was determined that XRD X-ray diffraction analysis was also performed and it was found that the presence of moisture in the vicinity of the fluid jet that flies to the collector did not affect the crystallinity of the fibers. The possibility of a high production of nanofibres in the electroscentrifuge spinning system, as well as easy access to a variety of surface morphologies cotrol in this system, promises to improve the efficiency of porous nano-fibre filtration systems. Key word:Nanofibers, electrocentrifuge, poly hy;sulfene, related humidity, porosity