Ellipsoid is a very representative geoelectric body whose charge electric field can be similar to many kinds of geoelectric bodies by changing the length of ellipsoid axis. In this paper

the ellipsoid is forward

that is

the maximum real root formula of the ellipsoid

the apparent resistivity formula of the rotating ellipsoid that is different inclination and the potential expression at any point outside the ellipsoid are written in MATLAB software Correspondingly

the apparent resistivity curve and the potential curve and potential gradient curve of high and low resistance rotating ellipsoid were obtained respectively. By analyzing many kinds of curves and studying the electric field characteristics of charged ellipsoid

the shape

shape and spatial location of the underground ellipsoid are deduced.