Full　grouted　prestressed　anchor　has　characteristic　of　reliable　auto-lock　anchorage　in　tension　section.　This　can　reduce　the　prestress　loss　effectively,　hold　essential　prestress　value　within　bolt　when　prestress　lose　in　its　anchorage　to　avoid　catastrophe,　and　improve　reliability　of　reinforced　engineering.　Numerical　simulation,　field　measurement　and　case　study　indicate　its　primary　mechanical　characteristic　and　reinforcing　effect　sufficiently.