Abstract: As a high-speed and efficient laying technology, REEL-lay has been used on a large scale in the deepwater offshore oil and gas project abroad. The paper mainly summarizes and studies the key equipment and technology of REEL-lay, analyzes the shortcomings of the development of REEL-lay in China and the follow-up development suggestions. It may be one reference for the future development of REEL-lay technology and equipment in China.