Abstract: In this paper, the spatial resolution of the earth’s gravity field for the future Grace Follow-On is discussed by analyzing the spatial disturbance gravity spectrum and the accumulative geoid error spectrum. The radial disturbance gravity with the height 200 and 250 kilometers was computed, using the EGM96 gravitational field model. Analyzing the radial gravity disturbance spectrum characteristics, a new earth’s gravity field model of 281 and 242 degree can be recovered at the two orbit heights. The accumulative geoid error spectrum model is given, and the accumulative geoid error spectrum at the height of 200 and 250 kilometers is computed. Analyzing the accumulative geoid error, we can conclude that the earth’s gravity field can be recovered to a degree of 286 and 228.