Abstract: The processing technology for composite foundation with compacted cement-soil piles has been widely utilized. Nonetheless, the related design theory and calculation method seem out of date, which usually refers to the counterparts for cement-soil mixing piles. Loading tests are the primary method to determine the bearing capacity of foundation recently, while there’re some undesirable problems with regard to the tests such as the long experiment term. Considering these issues, the secondary development is made in this study on the ABAQUS platform, and the NHRI model and incremental loading numerical calculation method are adopted to simulate the actual loading test. A comparison between the results from in-site loading tests and numerical simulation is made. The loading curves and settlement curves are in agreement. A conclusion is drawn: the results of actual loading tests can be obtained from numerical simulation as long as the mechanical parameters of soil adopted in numerical simulation are consistent with those in the actual projects.