|[英文摘要]People usually eat with others in their daily life, which is referred to as eating together. There are overlaps and differences between the concepts of eating together and joint consumption as well as co-experiencing from the psychological perspective, and eating together can be categorized into different types along different dimensions. Moreover, the influence of eating together on food consumption can be integrated into a “double-edged sword” effect, and a theoretical model is developed based on this effect and the differences in eating behaviors between different types of eating together. According to this model, eating together may promote healthy eating (positive effect) or lead to unhealthy eating behaviors (negative effect) under different theoretical perspectives. Future research should further investigate how to attenuate the negative effects of eating together on food consumption via the Nudge Theory, explore multiple interactions of eating together by utilizing cutting-edge technologies, and explore the influence of eating together on emotions to integrate the strengths of eating together and other eating behaviors.