With the intensification of contemporary urbanization, an increasing number of people are living and working in high-density urban environments. The importance of a good indoor environment for human psychology and health is increasingly evident, so researchers are paying more attention to the impact of indoor environments on human health and well-being. This article first extensively searches and organizes theories related to lighting, natural sounds, and indoor environments. Based on this, a mixed method combining qualitative and quantitative research is used to investigate the effects of combining lighting and natural sounds on emotions and productivity. This study intends to provide a scientific basis for the future design of more restorative indoor environments. Finally, the data analysis of the experimental results shows that the environment combined with cool light and natural sound is more helpful in improving people's well-being, restoring people's emotions, and improving people's attention and work efficiency.