Recently, research on food loss and foodwaste and the related environmental impacts has increased globally. Food loss and food waste occur in all aspects of the food supply chain from farm to table. A better understanding of the scales and trends of food loss and food waste is very important for any mitigation strategies. The food waste reflects directly the civilization of a society, and we need to understand the causes and consequences of food waste from multiple perspectives. Addressing food loss and food waste issue requires a wide range of actions from reducing, to promoting a healthy diet culture, learning from international experience, and building intelligent food systems.