As an emerging market in the future, 4D printing has attracted increasing attention. combines theory and application with divergent thinking. Examining what 4D printing is, how to do 4D printing, the impact of 4D printing on design, manufacturing, energy utilization, and other aspects, the changes 4D printing will bring to human society, the legal and intellectual property issues involved in 4D printing, and the changes 4D printing will bring to China and even the earth, the book systematically presents a different human society supported by 4D printing technology, serving as an inspiration for future technical researchers and the public to understand 4D printing technology.