A two-dimensional model of the ionosphere of Venus has been constructed by expanding pertinent quantitues in Legendre polynomials. The model is simplified by including only a single ion species (O+). Horizontal plasma flow velocity and plasma density have been calculated as a coupled system. The calculated plasma flow velocity is found to be in good agreement with observations and the results of earlier studies. Solar zenith angle dependence of plasma density, particularly on the nightside, shows some features which differ from results of earlier studies and observed values. Effects of raising or lowering the ionopause height and changing the nightside neutral atmoshere have been discussed. ¿American Geophysical Union 1987