This book provides a systematic study of the challenges of aging in China and of the measures being taken, planned, and still needed to cope with the challenges. It highlights that the number of people aged 65 or above is growing and that the growth will accelerate--from 176 million people representing 12.6% of the population in 2019 to 310 million representing 22.3% of the population by 2035, and it also highlights that the aging comes at a time when China's economy is not yet fully developed and not yet fully balanced. The book outlines how China has already established an elderly care system and is beginning to meet the needs of the elderly for economic security, social services, and so on; discusses the need for enhancing and considerably extending the existing system; and proposes reform ideas and key policy options.