Packaging is the face of the product when it is sold. Not only does it protect the product from various elements and damage, but it is also the first thing consumers see when purchasing. When we enter convenience stores and supermarkets, we can see various packages, potato chips, spicy sticks or various packaging bags displayed on the shelves. With the development of the packaging industry, how to use packaging design to assist product sales has become one of the key tasks of enterprise marketing. Taking food packaging bags as an example, before opening the package, consumers can have a certain understanding of the internal products through the color, pattern and text on the surface of the food packaging bag, which is what an excellent food packaging bag should do. Only in this way can consumers take the product as their first choice. It is not difficult to see from this that after ensuring the basic functions and packaging performance of packaged goods, the packaging design of food packaging bags plays a very important role in marketing. In fact, the packaging design of food packaging bags is always closely related to its production process. The design of food packaging bags has started from the selection of bag type and material structure. How to choose a variety of bag types such as three-sided sealed bags, special-shaped bags, and back-sealed bags, as well as how to choose various packaging functions such as moisture-proof and anti-static, are the basis for the production of food packaging bags. Generally speaking, the first step in the production of food packaging bags is printing, that is, pattern design is the beginning of the production of food packaging bags. How to determine the combination of design patterns of food packaging bags in terms of organization, expression theme, display style, etc. is the focus of the enterprise, but it must be closely integrated with the packaging content. It can not only attract people’s attention, but also introduce products concisely and clearly, so that consumers can understand product information intuitively. The above is the whole content of “How “packaging bags” use packaging design to assist product sales”.