Abstract: According to the mechanical characteristic of high rock slope, calculation of internal force of prestressed anchor rope & frame beam on foundation should be respectively completed on pulling anchor rope status and long term working status on high rock slope. Frame beam on foundation can be split into several single beams for the purpose of calculation. The single beams can be analyzed on the basis of Winkler model on the pulling anchor rope status. However, The single beams may be analyzed on the basis of continuous beam model on the long term working status. The calculation procedure is provided by a practical project in this paper.