Abstract: Based on practical engineering, first of all, through lab mixing proportion test and compressive strength test to determine construction scheme of cement-soil mixing pile. In addition, through the static load test to determine ultimate bearing capacity of composite foundation and strengthen the body single pile. Finally, through light dynamic penetration test, cone penetration test and core-drilling to test quality of cement-soil mixing pile, and put forward objective testing conclusion which is suitable for site conditions. This paper not only provide the basis for construction engineering design and construction, but also have practical significance for similar construction engineering.