Based on the current study of geosynthetics reinforced and pile supported embankment (GRPS) China and abroad, the loads and deformation of reinforced bedding undertaken, influence of dynamic load and intensity of reinforced bedding were analyzed by field test, model test and numerical simulation, the study was based on embankment soil arching effect, lateral spreading effect and geosynthetics deformation properties. The vertical embankment load by arching effect was analyzed by global arching, the tensile force of geosynthetics by that load was analyzed by cable, and ground reaction and initial deflection of geosynthetics were taken into account. Friction of embankment bottom was considered when analyzing tensile force by lateral spreading effect. Reliability of this method was validated, that perfects and promotes the theory of GRPS.