Abstract: The most common bolt used in deep foundation pit is the end bolt. In recent years, the full-length bond bolt has been widely used in the support of some confi ned space and loose soil. In this paper, through the analysis of the reinforcement mechanism of the full-length bond bolt, combined with the practice of a deep foundation pit supporting project in Xianyang city, the project adopts the full-length bond bolt instead of the end bolt to optimize the design scheme, and uses MIDAS GTS software to calculate and analyze the two anchoring forms. The monitoring data of foundation pit deformation show that the supporting effect of full length bond bolt is good.