Total Electron Content (TEC) and electron density are the basic parameters, which determine the ma jor properties of the Ionosphere. This work presents the lon- gitudinal, latitudinal, and seasonal characteristics of Equatorial Ionization Anomaly (EIA). Also, the altitude, monthly, and seasonal variations of these parameters are investigated. TEC and electron density data obtained from cosmic satellite during 2016 have been used for this study. These data have been analyzed using MATLAB software. The results show that TEC and Electron Density signi cantly vary with longitude and latitude. TEC and electron density values decreased from the equator to the poles, the trough of TEC and electron density observed at the dip equator and the crests far from the dip equator and decrease on further moving. It is also inves- tigated that the peak of the electron density are found around 250-380 km above see level. Its peak value depends on the season which was higher in equinox (SEP-OCT) and lower in winter (NOV-DEC). Monthly variations of TEC and electron density illustrates that the maximum values of the density pro le observed in April and goes to minimum in December. Seasonal variations of TEC and Electron Density clearly shows that their value is greater in Vernal Equinox than in Autumn Equinox that shows Equinoctial asymmetry. Key words:Equatorial Ionization Anomaly (EIA), COSMIC, total electron content (TEC), Electron Density and Equinoctial asymmetry.