Abstract:  Offshore oil and gas development is of high risk, especially the subsea and downhole system. The reliability and risk management of technology for subsea and downhole system have been highly valued by the industry. Technology qualification (TQ), as a system of technical evaluation standards, can be used for the risk assessment and process control system of offshore oil and gas development of new technology/new equipment (especially in subsea field). Through describing and analyzing the present application scope and situation of technology qualification in foreign offshore oil and gas technology development field, and comparing those with the current status of research and development of subsea equipment in China, we summarize the application method of technology qualification in the development process, and put forward the advice that research institute in China should apply technology qualification in the development of new technology/new equipment in offshore oil and gas development.