In order to aiming at the bearing characteristics of Central drainage and grouting concrete pile after drainage consolidation, based on the numerical calculation of plate load tests on single-pile composite foundation between Central drainage and grouting concrete pile and and Ordinary precast concrete pile, the results was used to analyze the characteristics of load-settlement curve, axial stress, the lateral friction and the pile-soil stress ratio.The calculation results show that, compared with single-pile composite foundation of the Ordinary precast concrete pile, the bearing capacity of the single-pile composite foundation with central drainage grouting concrete pile is increased by about 120%, It concluded that the phenomenon of stress concentration is reduced, and the bearing capacity of the surrounding soil is enhanced, and the degree of self-loading capacity is improved. It can provide theoretical guidance for the engineering application of single-pile composite foundation with Central drainage and grouting concrete pile.