To address the issue of resource waste caused by consumers' emotion-driven purchasing and disposal of cosmetics, the work aims to explore sustainable cosmetic packaging design strategies from the emotional perspective of consumers to slow down the cycle of cosmetic waste. Firstly, the existing problems of sustainable design in cosmetic packaging were analyzed through literature review. Then, data were collected through a questionnaire survey to establish an SEM model and analyze the packaging factors influencing consumers' willingness to purchase cosmetics by SPSS software. Subsequently, sustainable design strategies for cosmetic packaging were proposed based on consumers' purchasing factors and the unemotional design concept, and applied in design practice. Finally, the effectiveness of the design strategies was verified by fuzzy evaluation methods. Consumers were influenced by emotional factors when purchasing cosmetics. Therefore, the unemotional design concept promoting the separation of emotion from design was introduced into the cosmetic packaging. In conclusion, a series of design strategies proposed based on the unemotional design concept and consumers' packaging needs can make cosmetics more easily purchased and held as needed, reducing resource consumption and environmental destruction, thereby promoting sustainable development of the society.