Abstract: In this paper,based on the field static load experiment on the large diameter rock-socketed cast-in-place piles,and the strain testing of them,low strain integrity testing of piles,the bearing capability of the large diameter rock-socketed piles in the area where the filling soil is very deep and its effect factor have been analysed.The results of study can be worth of reference to understand the bearing behavior of the socketed piles farther and guide the engineering practice.