In this book, the theory and technology of the design, construction, and operation of offshore wind farms are systematically introduced. In terms of design of offshore wind farms, the characteristics, measurement and assessment of wind resources, macro-siting, micro-siting, electrical system design, foundation structure design of offshore wind turbine units and booster stations, and technical, economic, and environmental impact analysis are introduced; In terms of construction, the transportation of offshore wind power equipment, the construction of offshore wind farms, and the management of offshore wind farm construction are introduced; In terms of operation and maintenance of offshore wind farm, the offshore wind power prediction, intelligent control, and fault diagnosis technologies are explored; Finally, the integrated development of offshore wind power with other utilizations of sea areas is introduced.This book can be used as a training and self-study textbook for engineering and technical personnel involved in the design, construction, operation, and maintenance of offshore wind farms, as well as a reference for researchers in related fields of offshore wind power.