In order to study the performance differences between the strength composite pipe pile (SCP pile) and traditional pipe piles in foundation pit support, using indoor model tests and finite element simulation methods, the stress and deformation characteristics of SCP pile support structure during excavation are studied, and the influence of cement soil parameters on its support effect is revealed. The research results indicate that under experimental conditions, the support effect of cement soil wrapped pipe piles is significantly improved; Compared to traditional pipe piles, the horizontal displacement at the top of SCP piles decreases by 24.7% to 58.3%, the settlement of the outer soil decreases by 11.4% to 44.9% , and the bending moment of the pile body decreases by 10.9% to 24.6%.Cement soil can effectively improve the support capacity of pipe piles as supporting structures, and increasing the elastic modulus of cement soil and increasing its thickness can significantly enhance the sup-porting effect of reinforced composite piles. However, in contrast, increasing the thickness has a more prominent effect on the supporting effect.