Abstract: The best reinforced scheme for laying geosynthetics on high embankment is investigated.Based on the limit equilibrium theory,a new concept is applied to improve reinforced embankment which geosynthetics can raise the shearing strength of soil by increasing the direct stress of shearing surface.The best reinforced scheme methods are deduced,and a method of ascertaining the best reinforcement scheme using computer aided search of circular failure plane is also obtained.By the stability analysis and applied best reinforced location analysis of 8 kinds of typical reinforced loess embankment,the feasibility application of methods and the effect of best reinforced location are verified.