PURPOSE: A separable metallic pattern structure is provided to enable the attachment and detachment of a core in which items having various shapes and sizes in one mold plate are formed. CONSTITUTION: A separable metallic pattern structure comprises: a movable core(120) which includes a bent part bent along the edge part and has a plurality screw holes; a movable mold part(110) including an insertion groove and a stepped part to allow a bent part of the movable core is mounted; a fixed core(140) which includes a bent part bent along the edge part and a plurality of screw holes; and a fixed mold part(130) which is fixed to an injection molder and includes an insertion groove and a stepped part to insert the bent part of the fixed core.