PURPOSE: A self-assembly slipper is provided to have convenient wear sensation by controlling length of upper leathers according to the foot shape of a user. CONSTITUTION: A self-assembly slipper comprises: a sole(110), in which a plurality of upper leather coupling protrusions(120) projected toward outside along circumference; at least one or more upper leathers(130) having predetermined, in which a pair of coupling hole selectively inserted into the upper leather coupling protrusions. A slit for providing elasticity which is cut along one side of the coupling hole, so various pattern changes to the sole can be possible.