通过检索分析Thomson Innovation（TI）专利数据库中的国内外循环水养殖专利数据和研讨循环水养殖系统发展趋势，发现养殖水体净化工艺、养殖池结构设计、养殖水体温度调控、生物滤器和过滤设备等为目前国际循环养殖系统的研究热点，而国内循环水养殖系统的主要研究热点为鱼池设计、生物滤器、水循环装置、供氧、电机轴等；尽管部分国际研究热点在我国仍处于起步阶段，但近几年我国循环水养殖专利在数量上具有明显优势且增长较快，预计国内循环水养殖技术在未来会有快速发展。本文围绕我国“高效、优质、生态、健康、安全”的水产养殖业可持续发展战略目标，对我国循环水养殖发展提出了对策建议。

Based on patent retrieval and analysis with the Thomson Innovation (TI) database, the international development trend of recirculating aquaculture system (RAS) is investigated. The current international research and development focus for RAS are purification technology, aquarium structure, water temperature control, and biological filters and filter devices. Meanwhile, China has focused on fish tank and pond design, biological filters, RAS devices, oxygen supply and motor shaft, etc. Though some of the international research focus in RAS are new for China, the number of Chinese patents is greater than the international average and has grown rapidly in recent years, indicating a positive developmental trend in the near future. This paper provides recommendations for improving efficiency, quality, safety, and environmental protection of sustainable aquaculture as well as further measures for the development of RAS in China.