In this paper the whistler data received at Mohe (Magnetic Longitude 190°17"E, Magnetic Latitude 42°18"N) and the simultaneously observed ionospheric data are used, along with the assumption that the electron density distributions at Nonth and South hemispheres are necessarilly symmetric, to study the effects of solar eclipse of 31 July, 1981 on the whistler dispersion. The electron density profile along magnetic line of force, electron contect of magnetic flux and equivalence scale height at Mohe during the solar eclipse are also determined. In addition, the outer ionospheric effect of the solar eclipse are also discussed