Packaging design includes three parts: packaging modeling design, packaging structure design and packaging decoration design, which together constitute the packaging design.In order to design this independent system, they should not be a general stacking, not a simple addition, but an organic combination of mutual connection and interaction. In modern packaging their boundaries are not clear-cut. In particular, there is a phenomenon of mutual penetration between modeling design and structural design, or between modeling design and decoration design. The key is that the common purpose is to effectively play the functional role of the packaging. Its essence is the organic combination of spiritual function and material function, the organic combination of technical means and artistic creation, and the organic combination of scientific principles and aesthetic principles. That is, only the organic combination of modeling design, structural design and decoration design can play the role of packaging design.