Electrospinning process is considered to be the most effective method to prepare continuous micro/nanofibers and is a research hotspot at present. Effect of extended distance of needle on deposition state of electrospun fibers was studied by means of Maxwell electric-field-simulation software and concrete experiment. Results indicated that electric-field simulation could give a good explanation on the influence law of extended distance of needle on the morphology of the annular fibrous web. Extended distance of needle presented a remarkable impact on the outlook of deposited fibrous web in both needle-plate electric field and plate-plate one. With the increase of extended distance, circumference and spherical degree of the obtained annular fibrous web both increased. For the plate-plate electric field system, annular fibrous web possessed a larger spherical degree, but a lower outer diameter.
