Abstract: Pile - foundation is one of the safe and reliable measures for main buildings and constructions of large - scale engineering project in the area , where the upper part consists of failling granite fragments, the lower part consist of soft clay, and groundwater and seawater are connected with each other. What type pile will be selected and how can penetrate through the filling granite fragements successfully? These questions are worthy to be studied. A process of preparing lead-holes in the granite fragements filling using dive-hole hammer, and back filling gravel into the lead-holes, then driving H-shaped, was perfermed. The obtained result of the foundation streatment for a power plant in Shenzhen city is better.