The present invention relates to an assembled packing case, which comprises a bottom component with a criss-cross underside, corner components embedded to vacant corners of the bottom component, and limiting holes provided at embedding positions between the bottom component and the corner components; wherein the assembled packing case further comprises fasteners inserted into the limiting holes to define the relative position between the bottom component and the corner components; the bottom component and the corner components are set as mortise and tenon structures at the embedding positions, and the mortise and tenon structures limit the relative displacement between the bottom component and corner components in the vertical direction; and the corner components are embedded to the bottom component to form a case body by the mortise and tenon structures. The structure of the assembled packing case is simple and the cost is low.