Abstract: Generally, in pile anchor supporting system, the middle beam of pre stressed anchor is installed outside, that is a profile steel middle beam or a reinforced concrete middle beam is installed in the outside of guard piles. It is found this kind of middle beam brings more difficulties on setting up retaining wall and influences the waterproof of outer wall when the construction space is limited. The embedded profile steel middle beam introduced here avoids such negative effect, and decreases the project cost simultaneously.