Abstract: Offshore wind power has the advantages of high energy density, low wind curtailment rate and small impact on the environment. It has great development potential and can provide a strong guarantee for China to achieve the goals of carbon peaking and carbon neutrality. By 2022, China's cumulative grid-connected installed capacity of offshore wind power has exceeded 30 GW, continuously ranking first in the world. In June 2022, nine departments including the National Development and Reform Commission and the National Energy Administration jointly issued the 14th Five-Year Plan for Renewable Energy Development, clearly stating that: We should optimize the layout of offshore wind power, make deep-sea offshore wind power planning, focus on building five major offshore wind power base clusters in Shandong Peninsula, Yangtze River Delta, Southern Fujian, Eastern Guangdong and Beibu Gulf, and strive to achieve a cumulative installed capacity of offshore wind power exceeding 200 GW by 2030. By promoting the innovation and demonstration application of deep-sea floating wind turbine foundation and offshore VSC-HVDC transmission technology, we are striving to commence the construction of China's first floating commercial offshore wind power project during the "14th Five-Year Plan". However, China's offshore wind power industry is still in its infancy, and there are still problems such as excessive LCOE and imperfect policy system, which seriously restrict the scale development of offshore wind power.In this context, the journal Southern Energy Construction has planned a special issue on "Offshore Wind Power Engineering Technology" in July 2023 to closely track relevant hot spots and industry trends such as offshore wind power operation and maintenance strategies, offshore wind power construction and installation technologies in China's offshore wind power industry. Front-line teachers from universities and colleges, front-line engineers from enterprises and R&D personnel were sincerely invited to share the latest research results and industry trends, including 18 high-level papers, which cover the theory, technology and application in the fields of offshore wind power installation ships, offshore wind power foundation type-selection design, offshore step-up substations, offshore wind power and offshore hydrogen production. We hope to provide useful ideas and references for the high-quality and sustainable development of China's offshore wind power industry through the burst of thinking sparks in this issue.We sincerely thank the authors, peer reviewers and readers for their support to this issue. We hope that the publication of this issue can provide reference for experts and scholars from all walks of life who are concerned about and engaged in relevant research, so as to promote the rapid development of basic theory and key application technologies in the field of offshore wind power.  Introduction to Special Editors-in-Chief  Shi Wei, a distinguished researcher and doctoral supervisor of Dalian University of Technology, is selected as one of the first tip-top young talents of Liaoning Province, a high-level talent of Dalian City, a talent under the "Xinghai 1000 Youth Talents Plan" of Dalian University of Technology, and an outstanding young scientific and technological talent of China Renewable Energy Society. He serves as the director of Wind Power Branch of China Steel Construction Society, an expert member of New Energy Group of China Energy Society, a Technical Program Committee (TPC) member of ISOPE (an international conference on ocean engineering), a deputy editor-in-chief of SCI Journal: Frontiers in Energy Research, an editorial board member of international journal: Journal of Modern Green Energy, and a guest editor of Frontiers in Marine Science and Journal of Marine Science and Engineering. He is mainly engaged in the research on dynamic characteristics of offshore wind turbines under complex marine environment, and has successively been responsible for more than 30 projects, including projects supported by the General Fund of National Natural Science Foundation of China (NSFC), projects supported by the Youth Fund, sub-projects of Key R&D Program of the Ministry of Science and Technology, Xingliao Talent Program, school-enterprise cooperation project. In recent years, he has published 67 SCI papers in Energy, Renewable Energy, Marine Structures, Ocean Engineering and other journals, including 4 ESI highly-cited papers and 1 ESI hot paper, as well as 45 EI papers. He has obtained 20 invention patents in China, 8 patents in the United States and more than 40 utility model patents. He has won 6 provincial and ministerial awards, including the First Prize of Marine Engineering Science and Technology Award of China Association of Oceanic Engineering, the First Prize of Electric Power Engineering Science and Technology Progress Award, and the Second Prize of Scientific and Technological Progress Award of China National Committee on Large Dams.Le Conghuan, female, is an associate researcher and master advisor at the School of Civil Engineering, Tianjin University. She is mainly engaged in the design and R&D of offshore wind power and photovoltaic support structures, offshore towage construction, and others fields. She has led seven projects, including the general project supported by the National Natural Science Foundation of China, project supported by the Youth Fund, the sub-project of the National Youth Fund, the sub-project of the National Innovative Working Methods, and project supported by Tianjin Natural Science Foundation; participated in more than 10 projects such as the one under the State High-Tech Development Plan (863 Program), project supported by International S&T Cooperation, National Ocean Demonstration Project, and projects under the National Natural Science Foundation of China and Tianjin Natural Science Foundation of China; published more than 60 SCI/EI papers; She has obtained more than 30 licensed invention patents; and won one second prize of Tianjin Science and Technology Progress Award. She serves as a guest editor of SCI Journal: Frontiers in Energy Research.