Abstract: The pile sliding during pile installation may cause serious accidents, such as the pile falling out of the drive cap, or pile damaged by high tension stresses. At the same time, the pile sliding often makes a remarkable deviation between the drivability prediction and the measured blowcounts. Therefore, the pile foundation capacity after the pile sliding is a good problem for engineers to pay more attention to in practical works. In this paper, a case history is studied based on analysis results of dynamic load tests and pile driving records, and the influences of the pile sliding on the pile foundation capacity is analyzed. The analysis results show that the pile sliding will make a total energy released by pile driving decrease significantly. The analysis results from CAPWAP show that the decrease of the pile foundation capacity at the end of the pile driving is also very obvious. The pile foundation capacity evaluated by the method and often used today can not satisfy the design requirements. The new method is applied considering the effects of the pile sliding during the pile driving. The pile foundation capacity after the pile sliding can be calculated with different methods in different areas, and the area is divided based on a place where the pile sliding happens. The analysis results are used in the works, and it is found that the results are in a good agreement with the behaviors of pile in engineering practice.