Abstract: In order to investigate the distribution of ring currents ions, Shen and Liu＇s model of ring currents ions distribution simulation is used to research 10-100 keV ion＇s distribution property. Without calculating loss, based on the ions distribution of plasma sheets injection region and near earth injection region, we obtained the flux distribution of ring currents region main composition, such as H^＋, O^＋, He^＋, during the main phase of a magnetic storm. Different ions have the same structure of flux distribution under the same conditions. Ions flux will become intensity if the electric field improves. 10 keV energetic ions widely distribute in ring current even if electric field is considerably weak. 40 keV energetic ions and other higher energetic ions form steady flux distribution with improved electric field. And the intensity of high energetic ions （≥ 40 keV） flux will exceed thelow energetic ions relatively if the electric field is intense enough. Ions flux intensity will reach the maximum when the pitch angle is 90°.