China Mobile intelligent student ID card can help parents and schools to master the safety information of children to school and outside school, and effectively prevent children from indulging in electronic devices. Safety, friendliness, and simple operation are the core requirements of the product. We use the classic minimalist modeling elements to highlight the function of the speaker through the modular design language, making the product language unique and easy to identify, and easy to understand. The design of the lanyard fully considers the needs of children in different scenes, so that it is not easy to wind, safe and easy to operate.