Abstract: In the general study of soil mechanics and retaining walls,the calculation method of earth pressure is often the traditional Rankine's earth pressure and the Kulun's earth pressure theory,which are based on the semi infinite soil assumption.Because of the tense city land,the distance between building and supporting structure is often relatively small,and the role of supporting structure is more and more complex.Not only to keep its stability and economy but also to ensure the safety of ad jacent buildings and facilities in the process of urban development and construction.This paper deduced the calculation method of four kinds of finite earth pressure,we get the results that using the limit equilibrium stress analysis to get the limited soil pressure values are smaller and more economic than the other methods under the same conditions.And the formation and the wall distance under different situations have different characteristics in different algorithms.Considering the special conditions of soil pressure calculation method can make the construction design better.