This book includes two chapters. Chapter 1 systematically analyzes the spatio-temporal changes, pollution characteristics, and sources of air pollutants including PM2.5, volatile organic compounds (VOCs), ozone, sulfur dioxide, and nitrogen oxide in the key areas of China like the Beijing-Tianjin-Hebei and the surrounding areas, the Yangtze River Delta, and the Pearl River Delta, and summarizes the general evolution and scientific law of air pollution in various cities of China. Chapter 2 highlights the effective measures adopted to deal with air pollution in China. These articles fully demonstrate China’s achievements in air pollution prevention and control, which will provide a reference for air pollution control in other countries and regions.