Abstract: Geogrid has played an important role in transportation engineering. When it is applied into weak subgrade soils, both the overall and differential settlements of the subgrade soils can be effectively reduced. The settlement of geogrid reinforced embankments is analyzed by using the asymptotic homogenization theory. It is concluded that this method provides a new approach to settlement prediction of the geogrid reinforced soil mass. The method is simple, convenient and practical. The approach provides the theoretical basis for engineering applications by considering the construction practices and engineering properties of the geogrid that impact settlement.