In the context of contemporary food consumption, food packaging has gradually shifted from a tool for product protection and information transmission to an important cognitive interface that influences consumer perception, judgment, and choice. Existing studies in this field mainly focus on functional optimization, behavioral guidance, and cultural expression, while insufficient attention has been paid to how packaging design affects consumer cognitive processes. This paper introduces the theoretical perspective of consumption alienation and employs literature analysis and comparative case studies to construct a three-layer analytical framework of "judgment-choice-meaning". Furthermore, it proposes a regression-based analytical pathway centered on comprehensibility, choice support, and open-ended meaning expression, aiming to direct food packaging design towards greater consideration of consumer cognition and judgment processes, and to provide references for optimizing design practices and refining relevant regulations.