Abstract:The restoration and reuse of mine pit lake left by open-pit mining is one of the important topics for the sustainable development of mining areas. However, China is dominated by underground mining, and the safety management and ecological restoration of this kind of special mining wasteland have not been widely concerned and formed a systematic study. Therefore, based on literature review and inductive analysis, this paper summarizes the types, formation mechanism and characteristics of mine pit lake, and comprehensively combs the research progress and practical model of ecological restoration and reuse of mine pit lake abroad. It is found that the current research mainly focuses on three main aspects: the water balance and water chemistry influence mechanism of the pit lake, the restoration measures and key technologies of the pit lake, the utilization planning of the pit lake and its risk and benefit evaluation, and the time period, dimension and scale involved in the research are constantly expanding; Appropriate reuse of pit lake can play a rich ecosystem service function such as natural adjustment, production supply, entertainment and education. In the future, we should strengthen the systematic survey and value cognition of pit lake resources in China, establish a systematic sustainable restoration planning and design concept based on the whole life cycle, and promote the open pit restoration and mining area revival in China from a multidisciplinary and multidimensional perspective.