The monitoring of the deep soil horizontal displacements is very important in the excavation process. Based on the monitoring on the deep soil horizontal displacement in Yuhuan, the paper discussed the dynamic change of the displacement. The monitoring result shows that deep soil horizontal displacement usually happened near the orifice or 3 m below it; soil horizontal displacement situation of each hole was in safety range and tended to be stable. The foundation pit was effectively guaranteed by the information feedback to the construction according to the analysis study on the foundation pit monitoring effect.