As a flexible structure

reinforced earth retaining walls have been widely used in the field of civil engineering. However

excessive horizontal displacement of reinforced earth retaining wall due to earthquake could affect its service performance. Therefore

it is very important to develop an effective analytical method to calculate the horizontal displacement of reinforced earth retaining wall under earthquake. The reinforced earth retaining wall was divided into two regions for calculation based on the different movement characteristics of the backfill behind the wall. The key factors affecting the horizontal displacement of the reinforced earth retaining wall in different regions were discussed. Based on Mindlin displacement theory and pseudo-dynamic method

the calculation method of horizonal displacement in different regions under the earthquake

under the assumption of no soil-reinforcement relative slippage

was proposed and the influence of soil-reinforcement relative slippage on calculated results was studied. This method is further verified by centrifuge model test and can be used in the seismic dynamic analysis of general reinforced earth retaining walls. This provides basis for the dynamic design and stability analysis of reinforced earth retaining walls.