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will face a lot of difficulties in life, clothing, food, housing and transportation after losing an important channel to obtain information. According to the \the World Health Organization, visual impairment is divided into two types: low vision and blindness. There are three levels: Level 1, Level 2 Blind, Level 3 Blind. (WHO Programme for the Prevention of Blindness and Deafness, 2003) Table 1 Classification criteria for blindness and visual impairment. Category Level Best corrected visual acuity BlindLevel one blind <0.02-no light perception; or field of view <5 degrees Level two blind %u22650.02-<0.05; or field of view <10 degrees Visually impairedGrade one low vision %u22650.05-0.1 Grade two low vision %u22650.1-<0.3 Source: Made by the author (2025) 4. Methodology 4.1 Literature research method: By reviewing relevant literature on visual compensation theory, it has been found that the loss of one sense can be compensated by other senses. (Paul & Stephen, 2003) In addition, the effective utilization of other sensory functions can make up for deficiencies in visual function. (Wei, Z. & Cong, A., 2009) As a core theory, visual compensation theory will be used to explore how to optimize product design to meet the needs of visually impaired users. The author also researches and summarizes the design of related products for the visually impaired, studying assistive technologies and product design for visually impaired individuals, laying the foundation for summarizing design methods. 4.2 Non-participant observation: By adopting a non-participant observation method in visually impaired coffee shops and vocational training schools for the blind, researchers can gain deeper insights into the operational processes and product usage challenges faced by visually impaired baristas in real work environments. By observing the detailed behaviors involved in their use of equipment, researchers can identify potential design issues and product needs. 4.3 Semi-structured intervie Conducting semi-structured interviews with visually impaired individuals, these interviews combine predefined questions with open-ended discussions to explore the needs of visually impaired baristas. This approach enables researchers to gain a deeper understanding of the challenges and preferences users face in real-life situations. 4.4 Case study method: By evaluating the functions and performance of different products, the author can better understand which design elements can effectively improve the efficiency and safety of visually impaired baristas. Summarize the time design method of products for the visually impaired- 98 -