Abstract: A two-sided vertical mutual anchoring retaining wall with height H=9 6m was built in high grade highway engineering in mountain areas firstly. In order to research the horizontal displacements,basement pressure and lateral pressure of wall,the testing study is made on the full-scale.The change and distribution law of the reinforcement tensions,the lateral earth pressure on the face,the vertical earth pressures at the base,the horizontal displacements are obtained. The results can be used as a reference for future studies and designs of similar retaining structures.