Population is the most influential factor in social development and economic growth, especially in China. In this book, author Tian Xueyuan provides macro illustrations of the main issues confronting China’s population and development in the 21st century and advises on facing population development challenges to sustainable future development. This book explores issues such as the relation between the change of population and consumption, how the age of the working population affects economic structure and transition when above or below the Lewis turning point, the impact of population aging on growth speed and the pension system, how to remove the urban– rural dual structure, how to reform exam- oriented education, and how to balance relations between population, resource, environment, and sustainable growth.The discussions on population– consumption relations, labor– economy relations, urbanization and rural– urban relations, and beyond provide insightful judgment on and prospects for China’s future development. This book is helpful for international audiences to better understand China’s population and development challenges and strategies.