This open access book presents the concept of AI Cites for the first time. It includes the theoretical basis, development frontier, and different application scenarios of artificial intelligence cities. The book is accompanied by rich practical cases to conduct in-depth and detailed discussions on the proposition of artificial intelligence cities. It fills the gap between artificial intelligence and urban planning. This book points out the urgent human needs in the city for AI scientists to considered in the next round of AI technology development. It also provides new ideas for urban planners and researchers to solve problems with new technologies.