Abstract: Considering the load sharing for mixing pile, this paper presents a computational model, which is called load-sharing method. It is assumed that the load from mixing piles and soil nails will share the responsibility, and can bear the load of mixing pile resistance, which can be obtained from its strength. The soil nailing shared load can be attained by subtracting sharing load of mixing pile from the total load. Practical project shows that the composite structure of the soil nailing design has advantages of clear idea, simple calculation and usable value.