Longjiang Hydropower Station is located in the Dehong Dai Jingpo Autonomous Prefecture in Yunnan Province, Luxi County in the mainstream of the Longjiang River, is a power generation, flood control, taking into account the integrated irrigation hub project. With a total installed capacity of 240MW, the designed average annual generating capacity is 1.025 billion kW · h and the total storage capacity is 1.217 billion m³. In November 2010, all generating units were put into operation. Construction and operation of the project will play an important role in promoting the development of local economy and society and improving the ecological environment. We conducted a technical study on the site selection, planning and feasibility study of the water conservancy project, the consultation on the design proposal of the construction organization, and the discussion on the application of reservoir operation and proposed a scientific solution.