ABSTRACT So far Taiwan has no marine engineering experience of offshore wind farm, and construction project risks management is not formal and systematic approach. The purpose of this study is trying to establish a used reasonable and feasible risk management program to ensure the safety, construction quality and schedule within the offshore wind farm project. We collected and analyzed the domestic and international construction risk assessment approach, project, data integrity, and engineering complexity conditions of the pilot-offshore wind to bring forward suitable risk identification method. The integrity and systematic program of hazard and operability method (HAZOP) and integrate semi-quantitative risk analysis method (SQRA) analysis probability and consequence of disaster were used to checklist construction process and risk factors. Different risk levels correspond to risks unequal control plans such as risk avoidance, risk reduction, risk transfer and about risk acceptance to management. Research results can give feedback to the offshore wind farm marine engineering safety planning and build construction risk management technologies for unpredictable nature factors, such as typhoon or earthquake, when building wind measurement mast or setting up offshore wind turbines.