Abstract: Based on the mechanism for shot-anchoring protection and soil-nailing wall, the characteristics which the self-bearing capacity of soil-nailing wall is taken full advantage of is expounded. Compared with the shot-anchoring protection,it has the features of low cost of construction and convenience to construction. Compared with the rigid protection,the deformation and effect on dependent-time for the flexible protection make it more reasonable for the stress. Therefore,to use them,such as soil-nailing wall etc,may greatly reduce the investment if the condition allowed.