Based on AHP (Analytic Hierarchy Process), packaging design theory and mathematical fuzzy model, the packaging design and evaluation of Baihuami, a special agricultural product in Weixi Lisu Autonomous County, was carried out. Based on the AHP model, the agricultural specialty product packaging design system is constructed, which is divided into four main stages. The key design elements set of agricultural specialty product packaging and its hierarchy model are constructed, the weight of important design elements is calculated, and the importance ranking of key elements is generated. Through the design system constructed based on AHP and fuzzy mathematical model, two sets of packaging design of Weixi agricultural specialty product “baihuami” were completed, and the hundred mark system evaluation was realized. The applicability of AHP and fuzzy mathematical model in the packaging design process of agricultural specialty products is proved by examples, which endows the overall process of packaging design with scientificity and comprehensiveness. The rational approach is used to make up for the deficiency of the emotional domination at the design end, so as to improve the product quality of agricultural specialty products entering the front end of the market from the perspective of packaging design, and to help the rural revitalization.