As China has initially entered the era of compulsory garbage classification, the research aims to explore the practical design methods to improve the friendliness of packaging classification from the perspective of packaging designers, aiming to eliminate users' confusion and passivity of users in classification through the improvement of packaging design, and guide users to correctly classify, thus, enhance the user's value judgment of the product through the "classification-friendly" image. Based on the research results of international scholars in various fields on the relationship between packaging design and user environmental behavior, how packaging design affects consumers' purchasing decisions, and visual psychology in packaging design, a comparative analysis of the problems or advantages of product packaging on the domestic and foreign markets in the latitude of the effectiveness of users' garbage classification. Combined design examples, this paper clarifies more practical packaging design methods from simplifying packaging waste classification procedures, visual prompts and appropriate graphical guidance, and making up for the sense of cheapness of lightweight packaging with design improvements.