Objective To explore the application methods and influence of flat visual elements in packaging design and enriche the creative concept and style of packaging application design. Method Pentaw-ards award-winning works was investigated, and the flattening features and principles of core visual elements including graphics, text, color, and layout, were comprehensively analyzes. Conclusion Flat visual elements in the packaging design were simple vector graphics, color lumpy block, flat text modular, simple layout of the page and other methods of use, resulting in a personalized brand image, information transmission efficiency, multimedia applicability. The feasibility and effectiveness of the flat design concept in packaging design was verified.