After the designer gives the finished artwork to the proofer, he needs to carefully examine the designed product. If conditions permit, the designer should be directly involved in the proofing, so that the designed product can be improved in a timely manner, especially in the details of the improvement. Proofing should be fast and precise, with a carton cutting machine to cooperate. After the proof draft is published, it must be revised and finalized. For transport packaging, relevant kinetic tests need to be done to verify whether its strength meets the requirements. For sales packaging, the external decoration of the product should also be carefully observed. First of all, from a few meters away, to see whether the characteristics of the packaging are obvious, and whether its color collocation is reasonable. After that, take a closer look to see whether the packaging brand name is obvious, whether the color is simple and bright, and see if the key information is clearly transmitted. Then it is to observe from the details to see if there are flaws and problems. The design work of color box packaging, each aspect has its main content, and it is related to each other. A good designer must not only have a graphic design creativity but also be familiar with the entire process of commodity packaging, the attributes of the commodity, the structure of the container and other links related to the success of commodity sales, the design of the product, must be accepted and recognized by the customer, the market. This requires designers not only to master the theoretical knowledge of buffer packaging design, but also to understand the entire production process of the enterprise, especially the post-production of cartons, in addition to the necessary aesthetic and cultural accomplishment. Only when all aspects are well considered and practice is guided by scientific design methods can high-quality products be obtained.