Improve the working environment of workers working in the field by diagnosing/analyzing the process and working environment of the industry. We present an improvement guide to improve the working environment of workers and prevent musculoskeletal disease problems through ergonomic workplace diagnosis. In addition, when designing various digital products, we analyze the product usage environment and characteristics and design a PUI that considers the user's physical characteristics. This leads to improvement points and provides guidance on design elements in future product design.