 This paper reviews the applications of electroencephalography, e.g., and eye-tracking technology in user research. It focuses on industrial product design, digital interface design, and spatial environment design. The paper discusses the limitations and trends of these technologies, including the need for more accurate equipment and better data collection techniques. Future research should focus on multisensory and behavioral interactions, as well as universal studies of multiple technology fusions. This article was authored by Ling Zhu and Zhu Fang Lv.