Combined pre-stressed precast thin-wall steel and spun concrete composite pile (combined pre-stressed TSC pile) acts a new form with constant section based on the PHC pile.A range of the pile along the top side is covered by the steel pipe.This product owns a good prospect for the engineering application for its lower cost and advantages of TSC pile form.Bending tests are carried out to further research on its flexural performance when the product occupies only a small market share with unclear structural performance.The ultimate bending moment，deflection distribution and other responses of TSC pile and combined TSC pile are obtained through bending tests.Comparative analysis is done to provide evidence for the engineering application of the combined pre-stressed TSC pile by the test results.