PURPOSE: Assembly footwear is provided to make various shapes of uppers of leathers detachable from the inner side of an insole and to secure the safety of a foot. CONSTITUTION: Assembly footwear comprises an outsole, uppers of leather, and a bottom pad. A bottom part(110) has a sole shape. An extension part(120) is expanded upward from the edge of the bottom part and forms girth. In the outsole(100), a plurality of combining projections(130) are formed. The uppers of leather can deform a pattern. A connection hole(210) is selectively inserted into the combining projection. The bottom pad(300) is formed of a receiving space(310) receiving the combining projection.
