Abstract: CFG-pile composite foundation as an economy convenient effective ground handling means has been widely used in engineering field. For the calculation of bearing capacity of composite foundation of CFG pile, we analyses the not uniform on provision and too conservative on calculation about bearing capacity of composite foundation in Technical Code for Ground Treatment of Buildings and Code for Design of Building Foundation. Based on the theory of traditional Terzaghi and practical experience in engineering,propose the new method which correct the soil bearing capacity between piles firstly, then assemble the bearing capacity of pile and soil.