A wealth of research on the field of social science has revealed the paramount importance of warmth. However, even though warmth can be divided into two different meanings, literature have shared the same term (i.e., warmth) when demonstrating them. Aiming to understand the power of warmth, this study first classifies warmth as perceptual and social warmth. The former indicates warmth by physical sense, for instance temperature, and the latter captures traits related to sincerity, friendliness, and being socially connected with others. After clarifying each term, the authors then review the recent research conducted within the last 20 years. Specifically, this study concentrates on the role of the two aspects of warmth as both influencing and influenced factors. Furthermore, it focuses on the interaction these warmth shows, and gives implication of warmth as a mediator. By examining from various angles and approaching the fundamental of perceptual warmth and social warmth, the current study aims to help readers comprehend warmth in total and provide novel insights for further research.