Based on the foundation treatment of the yacht wharf engineering of the relocation project in Dalian east,we propose the reasonable design criteria and construction technology through studying the test area of the project.Studying the gravel pile testing,we put forward the quality examination method for the gravel pile using the caisson ballast testing and heavy dynamic penetration analyze the the piling results of the gravel pile,and summarize the engineering experience and quality inspection standards of the water vibrator which is used in low-intensity saturated clays.