Abstract: This research explains the fabrication of polyacrylonitrile tubular construction nanofibers by using against the charge electrospun process and important of the constant working parameters such as high polymer concentration and high rotational speed mandrel collector with utilized voltage and feed rate to perform the effect of each one on the diameter, adjustment, porosity, average surface area and average pore size of nanofibers. Results showed that the growth in the flow rate of the polymer solution considerably increased the nanofibers diameter, a scale of the average diameters, the nanofibers diameter arrangement were regularly joining. Otherwise, the nanofibers diameter, the scale of the average diameters reduced and the nanofibers diameter arrangement have been regularly smaller as the applied voltage raised. While changing both the utilized voltage and feed rate of polymer solution leads to improve the porosity percentage, heights intensity (Y%), average surface area (nm2) and limited the average pore size (nm).