Abstract: The water intake project of the 8×1000MW unit of a power plant follows the design concept of short waterfront occupation of the wharf, low temperature seawater extraction, low initial investment of water transmission, convenient operation and maintenance, and conducive to the construction of subsequent projects. The water intake scheme combining the submersible box intake of the high pile wharf and open channel intake and circulating water pump house in front of the turbine building has created conditions for the delayed construction of the wharf structure. The annual total cost of initial investment, total planned capacity investment and superimposed operating costs is the least expensive. ANSYS FLUENT software was used to verify the safety of circulating water intake on dock anchorage under the most unfavorable conditions, reasonably shorten the coastline length occupied by structures by 20%, build a scientific and reasonable coastline protection and utilization pattern, and achieve significant economic, social and ecological benefits.