目的 为探究图标语义与信息复杂度的关联，研究按照结构复杂度和资讯复杂度两个维度将图标进行划分，观测两个因素对老年用户辨识正确率与反应时间的表现差异，归纳出老年用户判读的共性，寻找适宜的图标设计原则，使用户有更好的绩效表现。方法 采用实验法和深入访谈法，针对30名老年参与者开展图标识别测试，通过图标与语义配对了解“结构复杂度/资讯复杂度”对辨识效能的影响。结果 相较结构复杂度，资讯复杂度更能决定图标识别率;老年图标设计时尽量采用小于14.5 bit资讯负载量图标;在相同资讯负载条件下，尽量采用“人形”“用具”“自然”作为主要元素，“几何”“字母”“指向”作为辅助元素。结论 构建图标辅助设计系统原型SIID1.0，通过设计方案评估，对前期信息复杂度原则的有效性进行验证。

The work aims to divide the icon into two dimensions of structure complexity and information complexity to explore the associa-tion between icon semantics and information complexity and observe the differences between the two factors on the recognition accuracy and reaction time of elderly users, and then summarize the commonness of elderly users' interpretation, and find suitable icon design principle to make users get better performance. An icon recognition test was conducted for 30 elderly participants through experiment and in-depth interview method. By pairing icon and semantics, the impact of "structure complexity/information complexity" on recognition efficiency was explored. Information complexity was more important than structure complexity in de-termining icon recognition rate. Icon for the elderly should be designed with less than 14.5 bit information load. Under the same information load, "figure", "appliance" and "nature" should be used as the main elements, and "geometry", "letter" and "pointing" used as the auxiliary elements. The prototype of icon aided design system SIID1.0 is constructed, and the validity of the early in-formation complexity principle is verified through the evaluation of the design scheme.