Reducing the settlements of smooth foundation efficiently is a crucial problem of excessive -pace railway creation in China. The new CFG pile -slab structure composite foundation is a floor remedy method that is carried out on CFG pile basis and pile-slab structure composite basis. Based on the revel in of constructing Beijing -Shanghai excessive-pace railway in China, the settlement -controlling effect, the settlement distribution legal guidelines and 3 key influence elements for structural shape of latest CFG pile-slab structural foundation are studied by the use of physical model exams and numerical simulations. The research results on this look at imply that the piles and soil bearing capacities of the new CFG pile -slab shape can be positioned into complete play due to the “load dispensing” function of slabs. The settlement decreasing effect of the new CFG pile -slab shape is first rate and can meet the requirements of high -pace railway creation. The affected location of engineering load has a depth over 18.75 m and horizontal period of 7.5 m nearing the embankment slope toe. The parametric observe presents the optimalizing structural form for high -quality agreement-controlling effect. The bodily version test results display precise concordance with the numerical simulation effects. The mixture of bodily version assessments and numerical simulations justifies the usage of this version in geotechnical engineering practices.