Dongying wind power first phase project of Datang International was planed in the position of the coastal area east of Dongying City, the overlying quaternary strata is thick and loose with poor engineering property and low-intensity ground, can not satisfy the requirement of strength and deformation for the important building (structure), the saturated silt and sand clay may produce liquefied natural phenomenon in the Ⅶ degrees of earthquake intensity. According to the site geotechnical conditions, the foundation treatment was planed with pre-stressed high-strength concrete pipe pile (PHC), and the prototype testing was needed. The paper introduced the construction course of prototype testing for pile foundation, detection method and test results.