Abstract: Flexible riser is one of core equipments of deep-water oil and gas exploitation. It is regarded as the “blood vessel” of underwater production system. In this paper, the basic structure and development of flexible riser system are introduced in detail. The design and production technology of the main flexible pipeline manufacturers are summarized. With the development of oil and gas field moving into deeper water, the technology of flexible riser in this paper will make contributions to the autonomous and controllable development of deep-water oil and gas exploitation in China.