Robust integral filter method is proposed to determine the orbit for geostationary (GEO) satellites and solve the problems that poor visibility and gross error in the measurements based space-borne, applying robust estimation and orbit filter method. Robust integral filter method combining dynamic information of satellite and space-borne GPS measurement is not limited by number of measurement and can get continuous orbit solutions which resist the impact of outliers. Base formula is derived for robust filter, then robust integral filter formula is achieved, at last, take FY-2D as an example, simulation tests was made, and the results show that the proposed method can improve accuracy for GEO orbit determination and decrease the influence of gross errors in space-borne GPS measurement.