This book introduces the concept of Eco-civilization, highlights the construction and development of eco-cities in China, and assesses the achievements and shortcomings of China's eco-city construction projects. As both China and Western countries face an impending ecological crisis, responding to that crisis is a common challenge for all human beings. There is an overwhelming consensus among Chinese scholars that in order to successfully address the ecological crisis successfully we must establish an eco-civilization, and one important step toward accomplishing that goal is to plan and construct eco-cities.