DX pile is a new kind of variable cross-section pile invented recent years, its unique load-carrying bells will reduce the settlement. Through small scale model test to study the theory of the DX pile. This experiment uses strain gage for studying of axial force analysis, dial indicator for studying of settlement, lever instrument for grading loading. It bases on the comparative tests with the straight pile and DX parallel experiment. The results show that the DX pile is superior to straight pile both on bearing capacity and settlement; the upper bell bears more than that of the below, but with the total load increasing, the below bell’s bearing capacity proportion increase.