Smartdevil marks an innovation in packaging design for mobile phone screen protectors. It does not use a drop of glue and only relies on the structure of the packaging to protect the product, using the environmentally friendly and pressure-resistant properties of corrugated paper material. We took the different functions of the mobile phone screen protector as the starting point for the design, then designed graphics that consumers can recognize at a glance. Users can identify the function of the mobile phone film at a glance on the shelf.