As the industrialization and urbanization of China are accelerated in recent years, soil and water loss resulted from development and construction projects has become a severe problem and aroused common concern of the whole society.The projects not only have some inherent connections with soil and water loss, but also possess their own particularities.This paper summaries and analyzes the situation and trend of soil and water loss resulted from the projects, reveals their nine characteristics, analyzes their formation, and provides the theory and basis for us to further take precautions against the loss.