This book focuses on the core technologies of special robots. Both principles and engineering practice have been addressed. This is achieved by providing an in-depth study on several major topics such as the vision positioning of mobile robots, the autonomous motion control of ruin search and rescue robots, and typical applications of text questions and answers robots. The autonomous motion control technologies of ruin search and rescue robots and typical applications of text questions and answers robots are the major features of the book. The book benefits researchers, engineers, senior undergraduate students, and postgraduate students in the fields of visual positioning, path planning, autonomous motion control, and typical applications of special robots.