After the industrial revolution, the global economy has developed rapidly and the society has made rapid progress. The process of urbanization is also accelerated, but because people blindly pursue rapid urban construction and neglect the protection of resources and environment, environmental pollution, ecological deterioration, abnormal climate and other ecological environment problems, as well as traffic congestion, environmental deterioration and other urban diseases.Eco-city was first put forward in the Man and Biosphere project initiated by UNESCO. After decades of theoretical development and practice, eco-city has become an accepted model for solving urban diseases and promoting sustainable urban development. This article first briefly reviews the background and traceability of eco-city formation, and reviews the domestic and foreign eco-city related research; selects China-Singapore Tianjin Eco-City, Tangshan Caofeidian Eco-City, Chongqing Yuelai Eco-City, Sweden Malmo Eco-City and Kazakhstan. Mabi Ecology, as a case study, analyzed and summarized these five typical ecological cities in terms of spatial shape planning and ecological technology applications. Finally, on the basis of case studies, we proposed the construction of ecological cities in the application of urban spatial forms and ecological technologies. Can refer to the planning and design model to explore the implications for our ecological city construction.