This article summarized the theoretical foundation of design principles through the survey research and analysis on the characteristics of the school-aged children smartphone users. And then the school-age children smartphone interface design idea was put forward from three aspects of information structure, layout design and icon design, to meet the physical and psychological needs of the school-aged children smartphone users.% 通过对学龄儿童手机用户特征进行调研和分析，得出设计原则的理论依据。进而从界面信息构架、布局设计、图标设计三个方面对学龄儿童手机界面提出设计构想，以满足学龄儿童用户的生理和心理需求。
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