Mobile group intelligence is a new model that uses ubiquitous mobile devices to efficiently collect data for new IoT applications. It boasts of low networking cost, easy system maintenance, and strong service flexibility, which greatly enhances the efficiency of the Internet of Things. This book is a summary of the author's research in the field of mobile group-aware network in recent years. The content is based on the support of mobile group-aware network for IoT applications, and comprehensively introduces the basic concepts of mobile group-aware network, fundamental principles, key technologies and typical applications.