明晰不同维度符号系统及符号活动中空符号在跨维度表意中的映射关系及其作用。从符号学角度对手机UI设计中多个维度的符号系统及活动进行梳理与分析,结合UI设计的实例重点辨析每个维度符号系统中空符号的形式与功能。手机UI设计符号活动中各维度的空符号不仅决定了该符号系统的结构与符号活动的节奏,而且在跨维度符号表意过程中会相互映射,直接影响着用户对系统的理解。 Clarify the mapping between symbologies and symbolic hollow symbols in interdimensional representations and their roles in different dimensions. From the point of view of semiology, this paper combs and analyzes the sign systems and activities of multiple dimensions in the UI design of mobile phones, and analyzes the form and function of hollow symbols in each dimension system with the examples of UI design. The empty symbols in each dimension in the mobile UI design symbol activity not only determine the rhythm of the symbol system’s structure and symbolic activities, but also map to each other in the cross-dimensional symbol representation process, which directly affects the user’s understanding of the system.