Introduction: The report “Investment Requirements and Potential Effects of Implementing China’s Air Pollution Prevention and Control Action Plan (2013-2017)” was supported by Energy Foundation (EF) and Clean Air Alliance of China (CAAC), and composed by the expert team of Chinese Academy for Environmental Planning (CAEP) and Nanjing University. The report takes a look at how much financial resources would the national, as well as various regional governments would need in order to fully execute and meet air quality targets. Additionally, the Report analyzes what social, economic and public health impacts can result from implementing these action plans. Four areas of focus are covered in this report: China entirely, the Beijing-Tianjin-Hebei region (also called Jingjinji Region), Yangtze River Delta and Pearl River Delta. The Report is meant to serve as a scientific guide for the abovementioned regions, as well as other regions to comply with the Action Plan by 2017.