This paper presents the in -situ p ulling test of 1∶12 anchorage model of Siduhe Suspension Bridge, and the deformatio n & strain distribution characteristics of surrounding rock of the bridge anchor ages are simulated and evaluated on the basis of the observed data. Permanent sa fety coefficient and instantaneously limited load -bearing ca pacity of anchorage are obtained. The test results can be used for numerical mod eling analysis for the next step.