The utility model discloses an inner sole is connected with big end of shoes structure, include the sole that constitutes by independent setting's the inner sole and the big end of shoes, the outer peripheral edges of said inner sole include the first convex part and first concave part of alternate setting in the girth direction, the outer peripheral edges at the big end of shoes include the second convex part and the second concave part of alternate setting in the girth direction, first convex part, first concave part respectively with said second concave part and second convex part position correspond and gomphosis each other, difference on first convex part and the second convex part is provided with first recess and second recess, first, two recess end to end form the storage tank that encircles in the sole outer peripheral edges, still buckle the area including the shoes limits, the shoes limit is buckled the area and is put into in the said storage tank, and around laminating in the sole outer peripheral edges, be provided with messenger's shoes limit at the arch of foot position of sole and buckle the limit structure who pastes tight sole outer peripheral edges in the area the consumer can select inner sole and shoes and then to assemble as required by oneself, and the equipment is convenient at big the end